Question
28) If one made a list of the Governors' salaries from each state, the list would be considered a census a. TRUE b. FALSE 29)A
28)
If one made a list of the Governors' salaries from each state, the list would be considered a "census"
a. | TRUE | |
b. | FALSE |
29)A jar contains 10 red marbles, 8 white marbles, 3 green marbles, and 5 blue marble. What is the probability that, if one marble is randomly selected, the marble will be red? Round to three decimal places
30)If the probability of an event is 0.171, then the probability of the complement of this event would be ____
31) If the probability of an event is 0.701, then the probability of the complement of this event would be ____
32)Suppose a game is played in which you pay $9 to play, and will receive $7000 if you win (in addition to getting your $9 back). The casino has a 99.92% chance of winning, and you play the game 800 times. What is the expected value of the game to the casino? Round to the nearest dollar.
33)A jar contains 35 $1 bills 8 $5 bills 4 $10 bills 3 $20 bills 3 $50 bills 1 $100 bill Every day for one year (365 times) you get to randomly pick a bill from the jar (the jar is refilled after every pick). For the year, what is the expected value of the total money you have won? Round to the nearest dollar
34)Suppose a game is played in which you pay $8 to play, and will receive $60 if you win (in addition to getting your $8 back. The casino has a 95% chance of winning, and you play the game 1600 times. What is the expected value of the game to the casino? Round to the nearest dollar.
35)A game is played that costs $1. If you win, and the probability of winning is 0.002, you will win $25. What is the expected value of this game?
a. | $1 | |
b. | $25 | |
c. | $0.948 | |
d. | $24.98 |
36)A normally distributed population has a mean of 124 and a standard deviation of 24. Determine the value of the sample average at the 25th percentile for samples of siz 130. Round to the nearest tenth
37)A normally distributed population of adult American men heights has a mean of 58.1 inches and a standard deviation of 3.18 inches. Determine the sample average height at the 99th percentile for samples of size 98. Round to the nearest tenth
38)A normally distributed population has a mean of 98.80 and a standard deviation of 0.44. Determine the sample mean at the 20th percentile mark for samples of size 52. Round to the nearest hundredth
39)A population is normally distributed with a mean of 16.9 and a standard deviation of 1.4. A sample of size 48 is taken from the population. What is the the standard deviation of the sampling distribution? Round to the nearest thousandth.
40)
In order to minimize the standard error of the sample mean, one would to use a small sample.
a. | TRUE | |
b. | FALSE |
41)
According to the CLT, even if a population is non-normal, the normal distribution may be used for the x-bar curve if the sample size is large enough
a. | TRUE | |
b. | FALSE |
42)
The alternative hypothesis may be written in one of how many different forms?
a. | 1 | |
b. | 2 | |
c. | 3 | |
d. | 4 |
43)
A statistical test will generate proof rather than mere evidence
a. | TRUE | |
b. | FALSE |
44)Use your TI83 to find the lower end of the interval requested: A 99% confidence interval for the average wight of a standard box of Frosted Flakes if sample of 69 such boxes has an average weight of 15.5 ounces with a population deviation of 0.8 ounces round to the nearest hundredth of an ounce
45)A confidence interval for the average adult male height is to be constructed at a 95% confidence. If the population deviation for the data in question is 3.6 inches, and the researcher desires a margin of error of 0.24 inches, then what should be the sample size?
46)Use your TI83 to find the upper end of the interval requested: A 99.0% confidence interval for the average weight of a box of cereal if a sample of 16 such boxes has an average of 17.73 ounces with a sample deviation of 0.278 ounces. The population of all such weights is normally distributed round to the nearest hundreth of an ounce
47)A sample of weights of 22 boxes of cereal yield a sample average of 17.7 ounces. What would be the margin of error for a 95% CI of the average weight of all such boxes if the sample deviation is 0.53 ounces? The population of all such weights is normally distributed. Round to the nearest hundredth
48)
A cereal company claims the average weight of a box of their cereal is 18.00 ounces. A quality control technician is worried that the boxes are over-filled and will to see if the average weight of the sample supports that hypothesis. A sample of 2500 boxes of the cereal are analyzed, and yield an average weight of 17.99 ounces with a standard deviation of .04 ounces. The alternative hypothesis for this problem is that mu
a. | equals 18 | |
b. | equals 17.99 | |
c. | not equal to 18 | |
d. | is greater than 18 |
49)A claim is made that the average human IQ is 102. A sample of 46 such IQs yields a sample average of 106. If the population deviation is 14, determine the p-value (nearest thousandth) to test that population average IQ is not 102
50)A statistical test is conducted at the 0.02 level of significance. The p-value for the test is determined to be 0.026. If there is sufficient evidence in support of the alternative hypothesis (the null is rejected) type the number 0 If there is not enough evidence to support the alternative (failure to reject the null), type the number 1
51)Use your TI83: A claim is made that the average human IQ is 100. A sample of 36 such IQs yields a sample average of 105. If the population deviation is 13, determine the p-value (nearest thousandth) to test that population average IQ is greater than 100
52)The amount of time a student takes to conclude an online algebra quiz is normally distributed. A hypothesis test is conducted to determine if the time the students are taking is, on the average, more than 60 minutes. Use your TI83 to determine the p-value of the test (to the nearest thousandth) if a sample of size 14 yields a mean of 83 minutes and a standard deviation of 25 minutes
53)The amount of time a student takes to conclude an online algebra quiz is normally distributed. A hypothesis test is conducted to determine if the time students are taking is, on the average, is not 36 minutes. Use your TI83 to determine the p-value of the test (to the nearest thousandth) if a sample of size 12 yields a mean of 33 minutes and a standard deviation of 19 minutes
54)The amount of time a customer waits in a fast-food frive-thru is normally distributed. A test is conducted to determine if the customers are waiting, on the average, more than 60 seconds. Use your TI83 to determine the p-value of the test (to the nearest thousandth) if a sample of size 20 yields a mean of 70 seconds and a standard deviation of 27 seconds
55)The amount of time a student takes to concludean online algebra quiz is normally distributed. A hypothesis test is conducted to determine if the time students are taking is, on the average, is not 36 minutes. Use your TI83 to determine the p-value of the test (to the nearest thousandth) if a sample of size 22 yields a mean of 30 minutes and a standard deviation of 23 minutes
please answer all
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started