8. The amount of time that a sample of students spends using internet on phone per...

8. The amount of time that a sample of students spends using internet on phone per day is given below. Student Time (in Minutes) Student Time (in Minutes) 1 45 11 42 2 21 12 37 3 26 13 41 4 26 14 43 5 45 15 46 6 37 16 35 7 22 17 31 8 33 18 29 9 26 19 46 10 21 a. Compute the mean & standard deviation b. Compute the median, mode & range.

Solutions

Expert Solution

Solution:

Standard deviation:

---------------------------

orchestra answered 1 year ago

Next > < Previous

Related Solutions

After 8:00pm on any Thursday, the amount of time a person spends waiting in line to...

After 8:00pm on any Thursday, the amount of time a person spends waiting in line to get into a well-known pub is a random variable represented by XX. Suppose we can model the behavior of XX with the Exponential probability distribution with a mean of waiting time of 44 minutes. (a) Provide the value of the standard deviation of this distribution. Enter your answer to two decimals. σX=σX= equation editor minutes (b) Suppose you are in line to get into...

Exhibit F In order to estimate the average time that students spend on the internet per...

Exhibit F In order to estimate the average time that students spend on the internet per day, data were collected for a sample of 36 business students. Assume the population standard deviation is 2 hours. Refer to Exhibit F. If the sample mean is 6 hours, then the 95% confidence interval for the population mean,μ, is Group of answer choices 4.35 to 7.65 5.67 to 6.33 5.35 to 6.65 6 to 6.65

The amount of time a random person spends watching Netflix is being compared to the time...

The amount of time a random person spends watching Netflix is being compared to the time that person spends exercising. Times are in hours per week. Time on Netflix Time Exercising 14 7 8 12 3 9 24 2 19 5 11 12 a) Determine the value of the correlation coefficient and interpret its meaning. b) Suppose the time on Netflix is being used to predict the time spent exercising. What would be the equation of the regression line? Express...

The amount of time a random person spends watching Netflix is being compared to the time...

The amount of time that a truck spends in waiting at the distribution center for unloading...

The amount of time that a truck spends in waiting at the distribution center for unloading is a random variable with a mean of 30 minutes and a standard deviation of 20 minutes. Suppose that a random sample of 9 trucks is observed. Find the probability that the average waiting time of trucks is: (1) Less than 20 minutes (2) Between 20 and 40 minutes

The amount of time a shopper spends in the supermarket is normally distributed with a mean...

The amount of time a shopper spends in the supermarket is normally distributed with a mean of 45 minutes with a standard deviation of 12 minutes. If 10 shoppers are selected, how many of them will spend less than 35 minutes? Round your answer to 3 decimal places. Do not include units in your answer. 4 points QUESTION 13 The amount of time a shopper spends in the supermarket is normally distributed with a mean of 45 minutes with a...

What is the relationship between the amount of time statistics students study per week and their...

What is the relationship between the amount of time statistics students study per week and their final exam scores? The results of the survey are shown below. Time 16 13 9 14 14 16 0 6 Score 98 82 91 100 86 95 62 83 Find the correlation coefficient: r=r= Round to 2 decimal places. The null and alternative hypotheses for correlation are: H0:H0: ? ρ μ r == 0 H1:H1: ? ρ μ r ≠≠ 0 The p-value is: (Round to four...

What is the relationship between the amount of time statistics students study per week and their...

What is the relationship between the amount of time statistics students study per week and their test scores? The results of the survey are shown below. Time 2 5 9 1 4 11 13 11 13 Score 60 61 70 49 72 84 76 80 83 Find the correlation coefficient: r = Round to 2 decimal places. The null and alternative hypotheses for correlation are: H 0 : = 0 H 1 : ≠ 0 The p-value is: (Round to...

Suppose for a random sample of 49 CMU students, the mean amount of time spent eating...

Suppose for a random sample of 49 CMU students, the mean amount of time spent eating or drinking per day is 1.58 hours with a S.D. of 0.62 hours! What is the Margin of Error at a C.L. of 90%? What is the right boundary of the C.I. at a C.L. of 90%?

Suppose for a random sample of 49 CMU students, the mean amount of time spent eating...

Suppose for a random sample of 49 CMU students, the mean amount of time spent eating or drinking per day is 1.58 hours with a S.D. of 0.62 hours! a. What is the Standard Error of the estimate of the population mean? b. What is the Margin of Error at a C.L. of 90%? c. What is the right boundary of the C.I. at a C.L. of 90%? d. At a 98% C.L., if the researcher wants to limit the...

Subjects