Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the difference between proportions of men and women who own smartphones. Assume that you want 90% confidence that your error is no more than 0.035. O Click the icon to view the discussion of sample size. The sample should includeO men and women. (Type whole numbers.) O Sample size discussion

Use the Student Unit Load data.  Student Unit Load 3, 12, 6, 9, 6, 12, 15, 12, 7, 9, 3   Find the mean, median, mode, range, standard deviation and variance. Use the range rule-of-thumb to find significantly high and low scores. Write the 5-number summary. Find the z-score for x = 15 Is x = 15 unusual in terms of a z-score?

Run the descriptive statistics for hrs/week of exercise.  Include the mean, median, quartiles, min, max, standard deviation and IQR.  First do this for hrs/week of exercise overall.  Copy and paste the values below.  Then redo this splitting up the data by sex.  Copy and paste that below too.  What similarities and/or differences do you see? Age Gender Height Arm Length Number Siblings Birth Order Handedness Number Classes Number Credits Hrs. Exercise Athlete at Broome Hrs. TV Award Pulse Number Piercings Facebook Friends Followers on Instagram Tattoo Division Local section 18 f 63 27.5 2 3 r 4 14 1.5 n 3 NP 74 2 82 72 n HS y 4 19 m 74 31.5 4 5 r 4 11 5 n 1.5 O   0 600 700 n STEM y 4 17 f 66 29.2 2 2 l 6 15 5 y 21 NP 64 2 1801 1370 n HS y 4 18 f 66 30 5 5 r 4 12 30 n 15 NP 91 1…

The data set {2,5, q, 10, 13, 16} has mean i = 9. %3D Find the value of q. Please enter a numeric answer ONLY. Do not enter q =

Only answer part C, use Part B and the chart if needed.

The ages​ (in years) of a random sample of shoppers at a gaming store are shown. Determine the​ range, mean,​ variance, and standard deviation of the sample data set.   12​, 20​, 23​, 14​, 13​, 17​, 19​, 18​, 13​, 16 Determine the​ range, mean,​ variance, and standard deviation of the sample data set.

A medical researcher measures the increase in heart rate of patients who are taking a stress test. What kind of variable is the researcher studying? Choose the correct answer below. Identifier variable Ordinal variable Categorical variable Quantitative variable

Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the difference between proportions of men and women who own smartphones. Assume that you want 95​% confidence that your error is no more than 0.03.

K The accompanying data represent the wait time (in minutes) for a random sample of 40 visitors to a popular attraction in a large amusement park. Use the sample data to complete parts (a) through (d). Click the icon to view the data for wait times. Wait times 7 6454256200 15 32 23 8 . 9 44 10 9 33 55 1 27 6 9 6 Print 22 7 23 10 25 25 16 54 3 9 32 Done *** 0 3 6 12 5 3 7 8 13 7 16 C - X

The ages (in years) of a random sample of shoppers at a gaming store are shown. Determine the range, mean, variance, and standard deviation of the sample data set. 12, 21, 23, 15, 20, 18, 21, 16, 15, 16 The range is 9 (Simplify your answer.)