ACT scores The Mathematics section of the ACT test had a mean of 20.9 and an SD

Question:

ACT scores The Mathematics section of the ACT test had a mean of 20.9 and an SD of 5.3 for the years 2013–2015. If these are well modeled by a Normal distribution, about what percent of students scored

a. Over 31?

b. Under 18?

c. Between 18 and 31?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Stats Data And Models

ISBN: 9780135163825

5th Edition

Authors: Richard D De Veaux, Paul F Velleman, David E Bock

See More Books

Question Posted: Aug 16, 2022 09:23 AM

See More Questions

The scores on a statistics test had a mean of 81 and a standard deviation of 9. One student was absent on the test day, and his score wasnt included in the calculation. If his score of 84 was added...
The histogram shows the distribution of mean ACT mathematics scores for all Wisconsin public schools in 2011. The vertical lines show the mean and one standard deviation above and below the mean....
Mathematics achievement test scores for 400 students were found to have a mean and a variance equal to 600 and 4900, respectively. If the distribution of test scores was mound-shaped, approximately...
Pam has a $25,900 basis (including her share of debt) in her 50 percent partnership interest in the Meddoc Partnership before receiving any distributions. This year Meddoc makes a current...
Which of the following income items, when received by a corporation, are included in personal holding company income (PHCI)? Indicate whether any special circumstances would exclude an income item...
A 2 mile spacing of watering points on a 40,000-acre ranch would result in approximately how many acres per watering point?
10. Draw a network diagram representing the following logic: as the project starts, activities A and B can be performed concurrently. When activity A is finished, activities C and D can start. When...
Shelf mix decision Superstore is a large discount supermarket. Profits have declined, so the manager has collected data on revenues and costs for different food categories. The following data pertain...
Onslow Co. purchased a used machine for $192,000 cash on January 2. On January 3, Onslow paid $6,000 to wire electricity to the machine and an additional $1,200 to secure it in place. The machine...
Ewing Company makes two products, M and N. Product information follows: Product M Product N Selling price per unit................$36................................$45 Variable cost per...
Dexterity scores Scores on a test of dexterity are recorded by timing a subject who is inverting pegs by picking them up with one hand, manipulating them to turn them over, and then placing them back...
IQ, finis Consider the IQ model N(100,15) one last time. a. What IQ represents the 15th percentile? b. What IQ represents the 98th percentile? c. Whats the IQR of the IQs?
Define the frequency of electromagnetic radiation. How is frequency related to wavelength?
Design a clocked D flip-flop, using a modified ECL circuit design, such that the output becomes valid on the negative-going edge of the clock signal.
An L2 steel strap having a thickness of 0.125 in. and a width of $2 \mathrm{in}$. is bent into a circular arc of radius $600 \mathrm{in}$. Determine the maximum bending stress in the strap.
Cars traveling from Canada to the United States through the Thousand Islands Border Crossing must stop for US Customs and Immigration. During the stop, each passenger in the car must present a...
Gasoline is pumped through a 2 in. sch 40 pipeline upward into an elevated storage tank at $60^{\circ} \mathrm{F}$. An orifice meter is mounted in a vertical section of the line, which uses a DP cell...
Change the recurring costs in Problem and Exercise 3 to $40,000 and redo the analysis. Problem and Exercise 3 Assume you are put in charge of launching a new website for a local nonprofit...
Find the indicated term in the sequence. 11th term of 1, 2, 4, 8, ...
Why can wastewater treatment requirements in Hawaii be less stringent than those in most locations on the U.S. mainland?
The Motion Picture Association of America (MPAA) rates each film to designate the appropriate audience. The ratings are G, PG, PG-13, and R. The pie chart shows the MPAA ratings of the same 891...
The frequencies of traffic fatalities of nonoccupants of vehicles are shown in the following bar chart. (www.the-numbers.com/research-analysis) Change this to a bar chart of relative frequencies....
The table gives the numbers of passenger car occupants killed in accidents in 2011 by car type. Convert this table to a relative frequency table. Subcompact and Mini Compact Intermediate Full Unknown...
Strawberry Inc. has historically been an all-equity firm. The analyst expects EBIT to be $1.5B in perpetuity starting one year from now. The cost of equity for the company is 11.5% and the tax rate...
Guzman company received a 60- day, 5 % note for 54,000 dated July 12 from a customer on account. Determine the due date on note. Determine the maturity value of the note and journalize the entry of...
Jeannie is an adjunct faculty at a local college, where she earned $680.00 during the most recent semimonthly pay period. Her prior year-to-date pay is $18,540. She is single and has one withholding...

ACT scores The Mathematics section of the ACT test had a mean of 20.9 and an SD

Question:

Step by Step Answer:

a According to the Normal model 28 of ACT scores are exp...View the full answer

Stats Data And Models

Students also viewed these Engineering questions