1) The cost of childcare in a community is normally distributed with families paying an average...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1) The cost of childcare in a community is normally distributed with families paying an average of $200 per week with a standard deviation of $50. (a) What childcare cost is ranked 20th percentile? (b) What childcare cost is ranked 90th percentile? (c) What cost is ranked in the bottom quartile? (d) What cost is ranked in the top quartile 2) A program director of a local community college has mandated that students should obtain at least a grade point average (GPA) of 3.5 to be enrolled in an advanced specialty program. The grade point average (GPA) of current students in the basic program is normally distributed with the mean of 2.8 and a standard deviation of 0.8. There were a total 150 students in the program. (a) What percent of the students will be enrolled in the advanced specialty program? How many are these students? (b) Only the top 10% of the students will be awarded a scholarship. What is the least GPA that will qualify a student for the scholarship? How many students will receive the scholarship? (c) About 50% of the GPA will range between what two values around the mean. How many students lies within this range? (d) What grade point average (GPA) is ranked 65th percentile. (e) What percent of the students had a GPA of less than 3.2? How many are these students? (f) What percent of students had a GPA of 3.8 or more? How many are these students? (g) What percent of the students had a GPA between 2.8 and 3.5? How many are these students? (h) What percent of the students obtained a GPA of less than 2.0 or more than 4.5? How many are these students? (i) About 90 students had GPA of less than how much? 3) According to a national survey, an average Canadian makes $32,500 in annual income with a standard deviation of $2,500. However, you believe that residents in your community make more than the national average. To support your claim, you took a random sample of 50 residents from your community and calculated their average income to be $33,000. At 5% significance level, do you have enough statistical evidence to support you claim? (a) State the null and alternative hypotheses. (b) Decide on the statistical method to use. (d) Establish the critical value. (e) Calculate the test value. (f) Make the decision. (g) Find and interpret the p-value. 1) The cost of childcare in a community is normally distributed with families paying an average of $200 per week with a standard deviation of $50. (a) What childcare cost is ranked 20th percentile? (b) What childcare cost is ranked 90th percentile? (c) What cost is ranked in the bottom quartile? (d) What cost is ranked in the top quartile 2) A program director of a local community college has mandated that students should obtain at least a grade point average (GPA) of 3.5 to be enrolled in an advanced specialty program. The grade point average (GPA) of current students in the basic program is normally distributed with the mean of 2.8 and a standard deviation of 0.8. There were a total 150 students in the program. (a) What percent of the students will be enrolled in the advanced specialty program? How many are these students? (b) Only the top 10% of the students will be awarded a scholarship. What is the least GPA that will qualify a student for the scholarship? How many students will receive the scholarship? (c) About 50% of the GPA will range between what two values around the mean. How many students lies within this range? (d) What grade point average (GPA) is ranked 65th percentile. (e) What percent of the students had a GPA of less than 3.2? How many are these students? (f) What percent of students had a GPA of 3.8 or more? How many are these students? (g) What percent of the students had a GPA between 2.8 and 3.5? How many are these students? (h) What percent of the students obtained a GPA of less than 2.0 or more than 4.5? How many are these students? (i) About 90 students had GPA of less than how much? 3) According to a national survey, an average Canadian makes $32,500 in annual income with a standard deviation of $2,500. However, you believe that residents in your community make more than the national average. To support your claim, you took a random sample of 50 residents from your community and calculated their average income to be $33,000. At 5% significance level, do you have enough statistical evidence to support you claim? (a) State the null and alternative hypotheses. (b) Decide on the statistical method to use. (d) Establish the critical value. (e) Calculate the test value. (f) Make the decision. (g) Find and interpret the p-value.
Expert Answer:
Answer rating: 100% (QA)
1 a To find the 20th percentile we need to find the zscore corresponding to the 20th percentile and then use it to calculate the corresponding childcare cost Using the zscore formula z X where X is th... View the full answer
Related Book For
Managing Business Process Flows Principles of Operations Management
ISBN: 978-0136036371
3rd edition
Authors: Ravi Anupindi, Sunil Chopra, Sudhakar Deshmukh, Jan Van Mieg
Posted Date:
Students also viewed these mathematics questions
-
Shimmer Incorporated is a calendar-year-end, accrual-method corporation. This year, it sells the following long-term assets: Asset Building Sparkle Corporation stock Sales Price $ 738,000 170,000...
-
Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...
-
Q1. You have identified a market opportunity for home media players that would cater for older members of the population. Many older people have difficulty in understanding the operating principles...
-
You are the manager of an educational facility and have beenasked to predict analyze the electric cost for 2020 based on the following 12 months of Information, You know the electric cost has both...
-
Lamp Light Company maintains and repairs warning lights, such as those found on radio towers and lighthouses. Lamp Light Company prepared the following end-of-period spreadsheet at December 31, 2016,...
-
Bill is a cash basis, calendar-year taxpayer. Which oft he following December items result in gross income or deductions for the current year? a. Check received for December rent, $700, not deposited...
-
On September 10, 2017, the Globe Trading Company invested \($3,000,000\) to establish a small sales subsidiary in Lima, Peru. The subsidiary converted \($3,000,000\) into 10,000,000 new sols (S/) and...
-
A beginning accounting student tried to complete a work sheet for Joyce Lee's Tax Service. The following adjusting entries were to have been analyzed and entered onto the work sheet. The work sheet...
-
PA8-2 (Algo) Interpreting Disclosure of Allowance for DoubtfulAccounts [LO 8-2] Marshall Travel, disclosed the following roundedamounts (in millions) concerning the Allowance for DoubtfulAccounts o 2...
-
John Jones is planning to open a restaurant in Wanaka in the future. He estimates that he needs $75,680 saved 9 years from now. He can earn 6.50% per annum. How much does he have to deposit now to...
-
Wagner Enterprise sells two products, large tractors and small tractors. A large tractor sells for $62,000 per unit with variable costs of $28,520 per unit. Small tractors sell for $34,000 per unit...
-
1, Analyze policies and plans and/or advocate for changes in policy that support organizational cyberspace initiatives or required changes/enhancements. 2. Communicate the cybersecurity policy...
-
The 1 9 6 8 Mexico City Olympics is largely remembered for what?
-
Simpson, age 45, is a single individual who is employed full time by Duff Corporation. This year Simpson reports AGI of $55,000 and has incurred the following medical expenses: Dentist charges...
-
b.If you invest $8,500 per period for the following number of periods, how much would you have in 12 years at 10 percent. c. How much would you have to invest today to receive $20,000 in 12 years at...
-
Theme: Management by Objectives and community (or social change) Post a very brief description (one to three sentences) of the article you found and address the following: Describe how you think the...
-
Suppose the S&P 500 futures price is 1000, = 30%, r = 5%, = 5%, T = 1, and n = 3. a. What are the prices of European calls and puts for K = $1000? Why do you find the prices to be equal? b. What...
-
Weekly demand for DVD- Rs at a retailer is normally distributed with a mean of 1,000 boxes and a standard deviation of 150. Currently, the store places paper orders faxed to the supplier. Assume 50...
-
Alaw firm specializes in the issuance of insurance policies covering large commercial real estate projects. The projects fall into two categories: shopping centers, and medical complexes. The typical...
-
Balding Inc. is the official producer of basketballs used in NBA tournaments. The Dallas Mavericks have placed a large order for Baldings Fusion basketballs of 29.5- inch diameter, which feature...
-
1. The German-American Vocational League was formed in New York during World War II to serve as a propaganda agency for the German Reich. Under U.S. law all foreign agents were required to register....
-
3. David and Fiona Rookard purchased tickets for a trip through Mexico from a Mexicoach office in San Diego. Mexicoach told them that the trip would be safe. It did not tell them, however, that their...
-
2. ETHICS Radio TV Reports (RTV) was in the business of recording, transcribing, and monitoring radio and video programming for its clients. The Department of Defense (DOD) in Washington, D.C., was...
Study smarter with the SolutionInn App