Suppose IQ scores were obtained for 20 randomly selected sets of siblings. The 20 pairs of measurements yield x = 97.78, y = 96.9, r=0.830, P-value = 0.000, and y = 20.49+0.78x, where x represents the IQ score of the younger child. Find the best predicted value of y given that the younger child has an IQ of 91? Use a significance level of 0.05. Click the icon to view the critical values of the Pearson correlation coefficient r. The best predicted value of ŷ is. (Round to two decimal places as needed.)

Q: The given data set represents a sample of the number of phone lines in use at various times at a…

A: The given data set represents a sample of the number of phone lines in use at various times at a…

Q: Researchers looked at the average number of hours of sleep per day in a group of 8 college…

A: Given data set is X={6,6,5,7,5,4,8,5}Arrange the data set in ascending order4, 5, 5, 5, 6, 6, 7,…

Q: A contributor for the local newspaper is writing an article for the weekly fitness section. To…

A:

Q: For the data represented by the Stem and Leaf diagram shown below, the Mean is equal to 68.275. The…

A: From  Given stem and leaf plot the data set…

Q: 1 2 13 r= 4 5 9 3 8 6 5 Calculate the sample correlation coefficient (r) to three decimal places.…

A:

Q: In each of Exercises, a.determine the mode of the data.b.decide whether it would be appropriate to…

A: a.The mode is the value that appears most frequently in a data set that is the value having the…

Q: A teacher found that the mean number of hours her 12 students spent studying for an AP Statistics…

A: old mean for 12 students = 6.7 sum of 12 students = 6.7*12 = 80.4

Q: Ms. Young asked her 24 students how many books each had read last summer. The smallest response was…

A: The objective of the question is to understand the central tendency and spread of the data set, and…

Q: A sample consists of the following n = 6 scores: -2, 3, -3, 1, -3, 4 What is the Z-score for the raw…

A: Given data set is -2,3,-3,1,-3,4sample size(n)=6

Q: The grade point average for college students is based on a weighted mean computation. For most…

A: From the data: X P(x) x P(x) 4 11/60 11/15 3 15/60 3/4 2 30/60 1 1 4/60 4/60

Q: In 1955, Life Magazine reported that the 25 year-old mother of three worked, on average, an 80hour…

A: Solution: Given information: n= 85 Sample size  x= 83.5 Sample mean μ= 80 Populaion Mean s= 10…

Q: Find a set of 5 items in a data set that have a range of 9, a mean of 11, a median of 12, and a mode…

A: We have to Find a set of 5 items in a data set that have a range of 9, a mean of 11, a median of 12,…

Q: The Computer Anxiety Rating Scale (CARS) measures an individual’s level of computer anxiety, on a…

A: From the sample information, it is interpreted that: For males: The sample standard deviation,…

Q: Periodically, Merrill Lynch customers are asked to evaluate Merrill Lynch financial consultants and…

A: Given, Merii lynch customer is asked to evaluate financial consultant and services.  Consultant A…

Q: Let M,, M2 and M, be the median sales for aisle locations of front, middle and rear, respectively.…

A: Consider the data that includes the randomly chosen sample of 18 stores, with 6 stores randomly…

Q: media. 2006 income of people at least 25 years old who had a bachelors degree but no higher degree…

A: here we have to find which number is the median and which number is mean.

Q: There were 5 members of a basketball team, who had a mean score of 12 points each per game. One of…

A: Given, There were 5 members of basketball team then mean score is 12 points. One member left team…

Q: A local store owner is interested in finding the mean age of her customers. She randomly surveys 82…

A: Key statistical concepts comprise of knowledge of population, sample, parameter, and statistic.

Q: Construct a 99%99% confidence interval for the true difference between the mean amounts of time…

A:

Q: The owner of a company has recently decided to raise the salary of one employee, who was already…

A:

Q: you are provideded with the dataset representing the scores of a group of students who underwent a…

A: Statistical Test for Tutoring Program ImpactTest Type: Since you want to assess if the new tutoring…

Q: A survey was given to 18 students. One question asked about the one-way distance the student had to…

A:

Q: A data set has five values. The largest value is 31. The median is 21. The mode is 16. The mean is…

A: