A local convenience shopping centre wants to place a limit on how long customers are allowed to be parked in a specific section of the parking lot. The manager of the centre is of the opinion that the average time customers spend at the centre, is 30 minutes. The shopping times of n = 64 randomly selected customers were recorded. The average and variance of the 64 shopping times were 33 minutes and 256 minutes, respectively. The questions follow on the next page. 1. Is there sufficient evidence to indicate that the average time spent by customers at the shopping cen- tre differs from what the manager believes? Use a test with level a = 0.10. Interpret your findings. 2. Construct a 90% confidence interval for the average time customers spend at the local

Q: Here are the scores on the scores on the first exam in an introductory statistics course for 1o…

A: Data 80,73,92,85,75,98,93,55,80,90  Note: According to Bartleby guidelines expert solve only one…

Q: 3. If the median of the data set x, i ..n? the data set 2x+3. i 1, 1..n, is 10, what is the median…

A:

Q: If the number of data observations is odd, the median is generally considered to be the average of…

A: When data observation is odd

Q: A school principal claims that the number of students who are tardy to school does not vary from…

A: The number of months is 10.

Q: 2. Report the statistical results for a three sets of data in APA style.

A: The statistical results for a  sets of data in APA style must be reported.

Q: Consider the following set of data. 12, 13, 13, 15, 16, 17, 18, 20, 20, 20, 22, 26. Compute the…

A:

Q: 2. Given the data: 4,5, 7, 7,8, 9, 11, 4, 5, 5, 6, 7, 8, 12, 12, 11, 6, 7 A. Calculate the first…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Use the attached picture of histograms to answer the following questions. All histograms have the…

A: The four histograms are given.  To interpret the following histogram.

Q: At the Hungry Heifer restaurant, the regular price for the Tribute to Swine buffet is $ Seniors…

A:

Q: 2. Find the mean of this data set: 8, 8, 3, 4, 8, 6, 4, 3. OA. 5 OB. 5.5 O c. 6 OD. 8

A: GIVEN DATA,  data set are:8,8,3,4,8,6,4,3we have to find out the mean of the data=?

Q: The correlation between years of experience and salary for a sample of 50 employees in the banking…

A: A sample statistic is a characteristic that can be measured for a sample.Parameter is the measurable…

Q: 44 is the median of the following data set, what is the value of the missing piece of data? 35 37…

A: Given that  Median = 44  The data set are 35 , 37 , 40 , ? , 50 , 51

Q: 20.) What is the mean of the following data set X = [14; 50; 45; 61

A: Given dataset X = [14, 50, 45, 61]

Q: 13. Suppose you have an Excel file with data in Column C, rows 2 through 101, that is skewed right.…

A: Here given , Data is following skewed right distribution.

Q: e sufficient evidence at the 0.01 level of significance tha e the null hypothesis, Hg, and the…

A: a) For average numbers of year of service

Q: Determine the median and the first and third quartiles in the following data.

A: Given that  46 , 47 , 49 , 49 , 51 , 53 , 54 , 54 , 55 , 55 , 59  Number of data value (n) = 11   We…

Q: 1. The lower quartile is equal to what? A. 50th percentile B. 25th percentile C. 2nd decile D. 3rd…

A:

Q: Which of the following is true about the relationship between the population mean and the mean of…

A: Sampling distribution of sample mean: If the population is normally distributed then the sampling…

Q: The following set of data is from a sample of n=7.   5    3    8    4    9    3    10        a.…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: Q2. A telemarketing firm is monitoring the performance of its employees based on the number of sales…

A: The data shows the sales for the last 20 hours.