Singers. The frequency table shows the heights (in inches) of 130 members of a choir. Count Count 2 5 6 11 9 8 Height 60 61 62 63 64 65 66 7 Height 69 70 71 72 73 74 75 76 9 4 2 20 18 7 4 67 1 68 12 a) Find the median and IQR. b) Find the mean and standard deviation. Make sure to account for the frequency of each height.

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

Arecent study focused on the number of times men and women who live alone buy take-out dinner in a month. assume that the distributions follow the normal probability distribution and the population standard deviations are equal. the information is summarized below. statistic men women sample mean 24.85 21.33 sample standard deviation 5.54 4.93 sample size 34 36 at the 0.01 significance level, is there a difference in the mean number of times men and women order take-out dinners in a month? state the decision rule for 0.01 significance level: h0: μmen= μwomen h1: μmen ≠ μwomen. (negative amounts should be indicated by a minus sign. round your answers to 3 decimal places.) compute the value of the test statistic. (round your answer to 3 decimal places.) what is your decision regarding the null hypothesis? what is the p-value? (round your answer to 3 decimal places.)

The graph shows the amount of total rainfall at each hour what was the total rainfall amount after three hours