Exercise 1.10 1. Cheryl has taken two quizzes in her history class. She scored 15 on the first quiz, for which the mean of all scores was 12 and the standard deviation was 2.4. Her score on the second quiz, for which the mean of all scores was 11 and the standard deviation was 2.0, was 14. In comparison to her classmates, did Cheryl do better on the first quiz or the second quiz? 2. Roland received a score of 70 for which the mean score was 65.5. Roland has learned that the z- score for his test is 0.6. What is the standard deviation for this set of test scores? 3. A data set has a mean of = 75 and a standard deviation of 11.5. Find the z-score for each of the following: a. x = 85 b. x = 95 c.x = 50 d. x = 75 4. A random sample of 1000 oranges showed that the mean amount of juice per orange was 7.4 fluid ounces, with a standard deviation of 1.1 fluid ounces. a. Determine the z-score, to the nearest hundredth, of an orange that produced 6.6 fluid ounces of juice. b. The z-score for one orange was 3.15. How much juice was produced by this orange? Round to the nearest tenth of a fluid ounce.

Q: The answer is not shown for the 2

A: Left end sum=sum of areas of the rectangles      =7X10+9.8X10+13.2X10+18.1X10+20.5X10      =68.6X10…

Q: Thank you for your help. I got the same answer for (b) and (c), but both were found to be wrong,…

A:

Q: Hasnt given me an answer for K or W?

A: the given differential equation is  2y''- 28y'+170y=0   ⇒{ 2D2-28D+170}y=0  so put D=m and y=1  for…

Q: C A If CA = 5x + 5 and EA = 10x - 20, find CE. %3D O 60 O30 O 10 10

A: To find the CE

Q: What is the answer to C(n, n-r+1)

A: The formula of the combination is given by: Crn=n!r!  n-r!

Q: where is the answer for 4 to 7?

A: Since you have posted a multi subparts question according to guildlines the expert has solved only 3…

Q: (d) Identify the factor levels. (e) Identify the treatments. (f) Identify the experimental units and…

A: Given: 100 pizzas are randomly assigned to 5 different temperatures and baked for 15 minutes. 20…

Q: Find A. 2 3 (24)-1 -4 2 A =

A:

Q: Find, if possible, (a) AB and (b) BA.

A:

Q: Use the figure below for problems 24-31. 7 501 350° 4. 24 40 130° 43 8. 24) Find mZ1. 50° 25) Find…

A: Solution : We have given a diagram and by using the given diagram we have to find out the measure…

Q: Verify A(BC) = (AB)C, where 3 0 A = [¹, 3). B-² i 2). C= ² 1 01 0.2 = -3 1 1 1

A:

Q: Find B so that AB = 1 = BA, where A = 3 4 5 7

A:

Q: (5+h)? –25 limp0 10. h O True O False

A:

Q: Find -9 + -3 + 3 +9 + 15...+51. a. 231 b. 384 C. 312 d. 385 е. 296

A:

Q: 2+V2+/2+20 do

A: ∫2=2+2+2  cosθ   dθ ∫2+2+21+cosθ  dθ  ∵1+cos θ=2 cos2θ ∫2+2+2×2 cos2θ  dθ

Q: How is b equal to zero?

A:

Q: Is this a r

A:

Q: identify the values of the variable √/4-x

A:

Q: Find, if possible, (a) AB and (b) BA.

A:

Q: 4. Find m RS. (5x+ 6) S. (11r- 72) If MD- E 24and DN- 2. A ind MD

A: As per our guideline we are allowed to do 1 question at a time. Please post other questions next…

Q: Find -9 + -3 + 3 + 9 + 15...+51. a. 231 b. 384 C. d. 312 385 е. 296

A: We have to find : -9+(-3)+3+9+15....+51 i.e. the sum of the series -9,-3,3,9.......51 Let's assume…

Q: -5y + 8 = -7 O a -3 O b -1/5 3 P. 1/5

A: Given;            -5y+8=-7 Solve: -5y+8=-7 Subtract 8 from both sides:             -5y+8-8=-7-8

Q: The answer "B" is not correct.

A:

Q: The order of (3, 4) in Z4 × Z10 is  a. 4 b. 12 c. 40 d. 5 e. 20

A: The objective is to find the order of 3,4 in Z4×Z10 First find the order of 3 in Z4, then find the…

Q: Simplify. [(21)4]² 1615 Enter your answer in the box.

A:

Q: For question d, is it -5 over 4?

A: For question d, is it -5 over 4?

Q: Find the formula for 1+2-3+4-5...

A:

Q: = B=( nds 2A – 38. Sean A %3D y B = Finds 2A 3B.

A:

Q: The table shows the movement of a stock for 30 randomly selected trading days. "Up" means the stock…

A:

Q: -2(3х + 4) + 4(4х +9) О А.10х + 28 О В. 10х + 44

A: To determine: simplified form of

Q: If a * b denotes a² – ab + 2, find the value of 2* (3 * 2). What is the value of x if x * 3 = 0? %3D

A: Given a * b = a2 - ab + 2

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.