The average American gets a haircut every 37 days. Is the average smaller for college students? The data below shows the results of a survey of 15 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. 41, 40, 27, 23, 38, 26, 42, 32, 30, 36, 26, 28, 31, 32, 36 The test statistic =          (please show your answer to 3 decimal places.)   The p-value =           (Please show your answer to 3 decimal places.)

Q: In a recent survey,  8  college graduates were each asked for the number of hours they work each…

A:

Q: Carol and David want to estimate the mean amount of time people spend at their local shopping mall.…

A: The following information has been given: Carol's sample: 38, 115, 68, 47, 25, 51, 32, 95 David's…

Q: Find the 83rd percentile of the following data set. 87, 90, 83, 78, 95, 82, 86, 84, 88, 88, 93, 95,…

A: Given, The data set is 87, 90, 83, 78, 95, 82, 86, 84, 88, 88, 93, 95, 82, 89, 88, 83         To…

Q: The Inter Quartile Range is the difference between the third and first quartiles. It describes the…

A: WE have to find given probability.

Q: In a recent survey, 8 college graduates were each asked for the number of hours they work each week.…

A:

Q: The average house has 11 paintings on its walls. Is the mean larger for houses owned by teachers?…

A:

Q: Complete parts (a) and (b). a. If three students scored 75 on a test and three other students scored…

A: The mean is the average of the dataset which is obtained by dividing the sum of all items present in…

Q: Data table Atmospheric Carbon Dioxide Concentrations (in parts per million) 323.4 325.6 338.4 339.4…

A: Answer :

Q: Determine whether the number described is a statistic or a parameter. The average ACT score of all…

A: The statistic is a measure or characteristics based on sample values. The parameter is a measure or…

Q: 1. (12pt) A researcher is studying hospital cleanliness comparing carpeted rooms with uncarpeted…

A: There are two independent samples which are carpeted rooms and uncarpeted rooms. We have to test…

Q: In a distribution of scores, the mean is 12, the median is 8 and the mode is 4. Describe the shape…

A: A distribution is said to be positively skewed / right skewed if Mode > Median > Mean  and…

Q: Snoop Incorporated is a firm that does market surveys. The Rollum Sound Company hired Snoop to study…

A: As requested, I have provided answer for blanks

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: If instead of 25, 80 male runners are selected for the study, what is the sampling error at 95%…

A: Given that Sample size n = 80 Sample mean = 53 Population SD = 5.5 Margin of error E = 0.8 The…

Q: Find the median of data file

A: Given data are,92, 34, 40, 105, 83, 55, 56, 49, 40, 76, 48, 96, 93, 74, 73, 78, 93, 100, 53, 82Total…

Q: The final exam scores for Mr. Allen’s class are shown below. 56, 59, 60, 65, 71, 72, 74, 80, 80, 83,…

A: Given observation and calculation is shown below Score 2*score 56 112 59 118…

Q: Data is given as per    40,   80,  100.   If the first two are equally important and the third (100)…

A: Given data: 40, 80, 100 First two are equally important and the third (100) is half as important as…

Q: Italian Tours offers a daily sightseeing trip around Florence. The list below gives the number of…

A: Given data, 19,19,23,23,27,29,30,34,36 Range=?

Q: THE RANGE OF SCORES 17,19,19,23,26

A: We know that the range is the difference between the maximum and minimum value.

Q: Which one measure of variation should you report for the variable AGE (people write their actual age…

A: The measures of variation are descriptive statistics that determine the spread of the data.

Q: 7. What is the median score achieved by a student who recorded the following scores on 10 math…

A: Median,Q₂ : It is the middle number of the sorted data

Q: A tour company in a major city has a daily sightseeing trip. Each day, tour officials record the…

A: X: 39, 42, 37, 30, 40, 31, 38, 43, 50We have to findMeanMedianMode

Q: The data set below provides the time 10 adults spent in their car traveling to and from work. Here…

A: Solution: Let X be the time spent in car travelling to and from work. The given data is 10, 3, 13,…

Q: se answer the question in the photo. TY!

A: GIven:

Q: c. The test-statistic for this data = (Please show your answer to three decimal places.) d. The…

A: From the given information, it is clear that,  Level of significance α=0.10 We have to frame the…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.