The following data represent the age distribution of a sample of 70 women having multiple-delivery births in 2020. Find the (a) mean (b) median (c) mode Age Number 15 - 19 1 20 - 24 25 - 29 16 30 - 34 28 | 35 - 39 17 40 - 44 3

The following data shows the cost of electricity (in $) during July 2015 for a random sample of 50 one-bedroom apartments in a large city.   a.Form a frequency distribution for the above data. b. Find arithmetic mean based on the frequency distribution you developed.

A survey has been conducted recently to study the hourly wages of part-time employees at the Food Delivery services sector. The result was organized into the following frequency distribution. Hourly Wages   Number of Part-time Employees $40 − less than $50 12 $50 − less than $60 26 $60 − less than $70 35 $70 − less than $80 17 $80 − less than $90 8 $90 − less than $100 2 (i) Calculate the mean, mode and standard deviation of the hourly wages. (ii) Calculate the coefficient of variation. (iii) If the median is equal to 64, calculate Pearson’s 2nd coefficient of skewness and interpret your answer briefly. (iv) The government wants to carry out similar survey next year. If the error of a point estimate of the mean is not more than $1.5, use the 97% confidence level to determine the sample size required to achieve this error.

Students in an experimental psychology class did research on depression as a sign of stress. A test was administered to a sample of 30 students. The scores are given. Complete parts (a) through (c) below. 32 54 11 15 35 21 OA. 158 34 15 55 51 11 35 2 1457 3 1234567 4123445566 511245666 34 33 46 OB. 11155 (a) Find the mean and median of the data. The mean is . (Round to three decimal places as needed.) 44 26 27 The median is .(Type an integer or a decimal.) (b) Draw a stem-and-leaf plot for the data using one row per stem. Which stem-and-leaf plot below shows the data? 2 112677 3 233445556 4 244666 5 1456 ... 21 42 38 OA. The distribution is symmetric. B. The distribution is skewed right (positively skewed). OC. The distribution is skewed left (negatively skewed). O D. The distribution is uniform. (c) Describe the shape of the distribution. Which description below best describes the shape of the distribution? 56 46 OC. 1112455668 2 14556 3 15 4 13457 5 223446667 46 27 33 35 22 44 36 0…

The following table displays the ages of female actors when they starred in their award-winning performances. Ages of Female Award Recipients 40 41 35 33 29 27 30 34 29 74 35 28 32 45 61 49 49 32 37 39 33 60 33 45 21 27 67 42 26 26 25 34 45 81 36 54 Find the mean and the median for the data in the table. (Round your mean to one decimal place.) mean median

The durations (minutes) of 26 electric power outages in the community of Sonando Heights over the past five years are shown below.  36 49 23 68 26 12 54 13 50 4 14 42 42 101 31 18 13 51 22 3 17 26 91 25 13 20       Click here for the Excel Data File (a) Find the mean, median, and mode. (Round your answers to 2 decimal places.)