On the SAT, the average Writing score is 486 points and the average Mathematics score is 522 points. The standard deviation is 85 points on each part of the test. Now suppose 36 test takers are selected. (See exercise 21 on page 326 of your textbook for a similar problem.) Question 97% of the time the sample average writing score should be less than what? (Remember the label.),

Q: Suppose the mean percentage in Algebra 2B is 70% and the standard deviation is 8%. What percentage…

A: GivenMean(μ)=70%standard deviation(σ)=8%

Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: Ten randomly chosen commuters with meal plans were asked how many swipes they used per week. The…

A: n1 = 10x¯1 = 18.2now add 2 students.x11 =15x12 = 17new mean = ?

Q: Two different surveys will be conducted to estimate the mean salary of employees who have taken a…

A: The confidence interval inversely depends on the sample size. The formula for the confidence…

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: When dating someone, what matters more to you: looks or personality? This question was the focus of…

A: P value=0.0  Hypothesis. H0: μ1 − μ2 = 0 Ha: μ1 − μ2 ≠ 0 (claim)

Q: A sample mean has a z= -4.0 on the sampling distribution created from the population of psychology…

A:

Q: What does “statistically significant” mean in this context? (More than one answer is correct. Select…

A: Hypothesis Testing is a type of inferential procedure is statistics.

Q: you know 10% of the people in Amsterdam describe themselves as hipsters. you ask 400 respondents if…

A: Solution: Given data : p = 10% = 0.10 Sample size (n) = 400 To find: standard deviation of the…

Q: YOU ASKED 50 COLLEGE STUDENTS HOW MANY PETS THEY OWN. WHAT IS NOT A POSSIBLE SCORE FOR A RANGE FOR…

A: According to the provided information, The number of pets that any of the college student own should…

Q: ould have the right to marry. (The 2014 data were collected before the 2015 US upreme Court decision…

A: There are four types of level of measurement, i.e.,  Ratio scale: data is continuous and have a…

Q: ve an opinion about which population will have a higher mean score. Here are her hypotheses. H0:…

A: Given The data is as follows:

Q: After six biology tests, Ruben has a mean score of 76. What score does Ruben need on the next test…

A: After 6 biology tests :  Mean = 76  After next test : ( biology test will be 7 now )  Mean =78…

Q: 3. An instructor is administering a final examination. She tells her class that she will give an A…

A:

Q: Steven ran the 100 meter dash in 13 seconds.  What is his T-score if the class mean was 14 seconds…

A: t statistic

Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

A:

Q: Lisa took 4 courses last semester: Physics, Biology, History, and Calculus. The means and standard…

A: Lisa took 4 courses last semester, we need to convert Lisa's scores into z-scores. Since, z-score =…

Q: Mary scored a 25 when the mean is 23 with a SD of 1.5 Sarah scored a 7 when the mean is 6 with a SD…

A: Given Information: Mary's score is 25 Mean μ=23 Standard deviation σ=1.5   Sarah's score is 7 Mean…

Q: Suppose the mean percentage in Algebra 2B is 70% and the standard deviation is 8%. What percentage…

A:

Q: Raul received a score of 62 on a history test for which the class mean was 52 with standard…

A:

Q: In Exercises, we have provided simple data sets for you to practice the basics of finding a…

A: The data is 2, 5, 0, –1. The population size is 4.

Q: For a statistics test the mean is 63 and the standard deviation is 7.0, and for a biology test the…

A: We know that ,Z-score=x-μσ

Q: pasting the output into Word and attaching it to your post. Graph the data as a histogram with a fit…

A:

Q: A data set is described as consisting of n = 15 scores. Based on the notation being used, the data…

A: We have the following statement .

Q: The following is a list of 14 measurements. 8, -13, -3, 47, -47, 37, 69, -52, -28, 23, 27, 58, -42,…

A: From the information, There are 14 measurements given as follows: 8, –13, –3,47,–47.…

Q: 5. Two different 5th grade classes take the same test. In the first class of 50 students the mean…

A: Given the First class Sample size =50  Mean =70  Second class  Sample size =20  Mean =90 We have to…

Q: On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 90,…

A: Given that, Mean = 72 Standard deviation = 7

Q: A study commissioned by a clothing manufacturer measured the Waist Size of 250 men, finding a mean…

A: Suppose the variable x denotes the waist size of men. The researchers measured the waist sizes of…

Q: Your statistics teacher splurges on five comic books, spending $1230, $70, $540, $610, and $1600 on…

A: Given 1230 70 540 610 1600

Q: C2. GSS 2014 and GSS 2018 respondents were asked their opinion on whether homosexuals should have…

A: Given information: GSS 2014 and GSS 2018 respondents were asked their opinion on whether…