An advertising firm has decided to ask 116 customers at each of four local shopping malls if they are willing co take part in a market research survey. At a = 0.01 is there evidence to show that the proportions are not all the same. A В C Willing 65 65 70 67 Not Willing 51 51 46 49 What are the expected numbers? (round to 3 decimal places) A В D Willing Not Willing

Q: O subjects in a study were randomly assigned into two equally sized groups. One group was shown a…

A: Given data is:

Q: Illustrate the Test R2 for significance?

A: Coefficient of determination: The coefficient of determination (r2) is the percentage of total…

Q: Mrs. Cruz is a Math teacher; she gives a 60 item test for remedial class. The scores of 20 students…

A: Deciles divide the ordered data into 10 equal parts.   There are 20 values in the data. So, n = 20.…

Q: The scores of University exams are displayed on the board. The scores of students are :-…

A:

Q: Heights of NBA All-Star players are normally distributed. 97.5% of players have a height of 85…

A:

Q: A football kicker makes 70% of his field goals. If he attempts 20 field goals, determine the mean…

A: Determine the mean number of field goals made by football kicker. From the information, given that a…

Q: Warren tosses 5 coins. Write down the sample space where H = head and T = tail. Ex: HHHTH

A:

Q: condition. Find the lower cutoff score (number of berries which will go for juice).

A: The z score can be calculated as: z=x-μσ The required z score that is associated with the bottom…

Q: Find the sample mean of the data. Be sure to include screenshot of Excel of your answers and…

A: 30 30 30 30 40 60 40 15 50 150 40 30 30 30 40 30 40 30 30 30…

Q: Find the Score function

A: With respect to the relevant parameter, the score function is a derivative of the log-likelihood…

Q: What is the median? 2 5 6

A: Median: For odd number data sets, the median is n+12th data value.

Q: AP Stats The College Board reported that 58.7% of allstudents who took the 2010 AP Statistics exam…

A: The hypotheses are given below: Null hypothesis: H0: p=0.587. Alternative hypothesis: H1:p>0.587.…

Q: Describe the t test for 2 independent samples.

A: In order to assess whether there is statistical evidence that the related populationmeans are…

Q: The stem-and-leat display repr members of the class. Identify the mean, median and mode for the data…

A: According to the given information, we have The stem and leaf is given. Data 47 50 55 57 63 64 64 66…

Q: Find the number of different selections of 4 letters from the word STATISTICS.

A: "STATISTICS" No.of letters in the word " STATISTICS " =10

Q: Consider the sample data: 125, 115, 112, 127, 112, 105.

A: Data set: 125, 115, 112, 127, 112, 105

Q: What does the p values tell us about the safety of the car?

A: With respect to the output of the pairwise comparison

Q: Use the information provided here to answer the following questions. H0 : p 60, n 36, Xbar = 58.…

A: option (a) which is the information provided characterizes one smaple, one sided test is correct…

Q: Which one measure of variation would you report for the variable SEX (1=male, 2=female )

A: Variance is a single statistic that measures the spread or variation of a data set.

Q: Find the mode of these test scores: Test scores 100,75,80,90,80, 100,92,88,80,84,81

A: Test scores 100,75,80,90,80, 100,92,88,80,84,81

Q: What is p value ?

A: The​ P-value is the probability of observing difference in the sample statistic this high or higher…

Q: Explain the sample mean of the difference scores varies.

A:

Q: How do ypu find the preducted score is the price is $60

A: Let the independent variable (x) = price ($) Let the dependent variable (y) = overall score The…

Q: The mean weight of 150 students in a certain class is 60 kg. The mean weight of boys in the class is…

A:

Q: Allie has 5 exam scores 98, 94, 84, 95 and 95 in math class. What score does she need on the final…

A: According to questionAllie has 5 exam scores 98, 94,84,95 and 95 in math classWe have to calculate…

Q: Mina is waiting in line at the Department of Motor Vehicles (DMV). Her wait time is in the 85th…

A: It is clearly given in statement that at Department of Motor Vehicles waiting line is Mina wait time…

Q: How do you test for reliability

A: Reliability: Reliability is the consistency of the measures used in a testing process. In other…

Q: You want to find out the top three food items sold in your school cafeteria. Select the best way to…

A:

Q: one percent of grades are greater than what z-score?

A:

Q: Raymond wants to estimate the percentage of parents that use cloth diapers. He asks a randomly…

A: According to the provided information, The data set will represent the collection of response…

Q: The boxplot below shows salaries for CPAS and Actuaries in a town. СРА Actuary 20 30 40 50 60 70 80…

A:

Q: Lionel has just gone grocery shopping. The mean cost for each item in his bag was $3.19. He bought a…

A: Given info: The mean cost for each item in his bag was $3.19.

Q: Parent perception 2.5 3 3 3.5 1.5 2 2 3 2.5 3 (hours/day) Difference (A P) 3.4 3.2 1.7 4.7 4.9 1.8…

A: Given in the following data difference (A-p) = d =3.4,3.2,1.7,4.7,4.9,1.8,0.9,4.1,2.7,2.8 Meand: We…

Q: What's the p-value?

A: In this case, we need to define the p-value.

Q: how did you find the Z score?

A: The critical value  of z for 97% confidence  interval  is 2.17.

Q: Mary is participating in a 6-day cress-country biking challenge. She biked for 60, 51, 62, 63, and…

A: According to the question, 60+51+62+63+54+x6=59                    x = 64

Q: Joselyn hopes to receive a grade of B or better in her statistics class. Currently she has scored…

A: Mean= sum of total obervation/ total no. Of observation

Q: How do you do a spearman’s test ranking

A: To perform spearman's rank correlation coefficient,   Let X and Y are two variables.. first we find…