2. The number of vacation days taken by employees of a small company in the summer is summarized below: a) Find the mean of this data b) Find the standard deviation of this data (assume sample) c) Find the z-score of data observation x = 7 vacation frequency 1-5 6-10 25 2 5 11-15 9 16-20 4

Q: 1.    Suppose a professor gives an exam to a class of 40 students and the scores are as follows.…

A: As per our guidelines we can solve first question and rest can be reposted. Solution-: Given data:…

Q: 1) In a normal distribution, most participants fall within +/- 1 standard deviation from the mean.…

A: Disclaimer: Since you have asked multiple questions, we will solve the first question for you. If…

Q: 2. Following are 'cash back' amounts requested from a grocery story on a Friday afternoon. Calculate…

A:

Q: For the following data sample: 9,15,12,15,18,12,6,21,24,27 Calculate the Mean= [mean] Meadian=…

A: We have to find given blanks.

Q: 4.) Determine the range and Standard Deviation of the set of data 4, 8, 9, 11, 13, 15

A:

Q: A group of 894 women aged 70- 79 had their height and weight measured. The mean height was 159 cm…

A: Introduction -   When Mean and standard deviation are given the formula for range is : Range = Mean…

Q: The following set of data is from a sample of n=7.   5    4    12    11    10    4    3        a.…

A: The mean of a data set is calculated by dividing the sum of observations with the number of…

Q: 7. At an outpatient testing center, a sample of 20 days showed these numbers of cardiograms done…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: An instructor wanted to know if his students are better at math or writing. He had students take…

A: a. The test done was dependent t test.

Q: A group of students in a math class were surveyed and asked: “How many hours each week do you study…

A: Solution

Q: 1. Which of the following dataset has the lower standard deviation? o Dataset A: 5, 10, 15, 20, 25,…

A: Standard deviation: The positive square root of mean squares of the deviation taken from arithmetic…

Q: What was the sample size? What percent of participants had a score of 4? of 5? What is the score…

A: Given that,The frequency distribution is,Scoref71867752047332113total129

Q: Compute the mean, median, mode, variance and standard deviation of the following data. An…

A: Wing span in mm Number of insects 15-19 5 20-24 10 25-29 32 30-34 42 35-39 76 40-44 110…

Q: Consider the following two datasets: Dataset 1                       Dataset 2 1      9…

A:

Q: A gardener was doing a study on the number of roses produced from a random sample of rose bushes.…

A: