Calculate the standard deviation f House of Commons:
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- Five hundred consumers are surveyed about a new brand of snack food, Crunchicles. Their age groups and preferences are given in the table. Liked Crunchicles Disliked Crunchicles No Preference Total A 18-24 25-34 35-55 55 and over 37 29 27 29 40 11 8 7 14 72 52 52 109 99 One consumer from the survey is selected at random. Leave all answers in a reduced fraction. a. What is the probability that the consumer is 18-24 years of age, given that he/she dislikes Crunchicles? b. What is the probability that the selected consumer dislikes Crunchicles? > Next Question Type here to search c. What is the probability that the selected consumer is 35-55 years old or likes Crunchicles? d. If the selected consumer is 70 years old, what is the probability that he/she likes Crunchicles? CH E II Total 133 55 174 312 240 500 ( C In &SAT : MEAN IS 500 STANDARD DEVIATION IS 100 ACT: MEAN IS 20 STANDARD DEVIATION IS 6Calculus The height of 700 boys are found to approximately follow such a distribution, with a mean height of 148 cm and a standard deviation of 19 cm. Find the number of boys with heights between 129 cm and 167 cm.
- A distribution of values is normal with a mean of 120 and a standard deviation of 4.Find the interval containing the middle-most 68% of scores: Enter your answer using interval notation. Example: (2.1,5.6)The distribution of the number of hours that a random sample of people spend doing chores per week is shown in the pie chart. Use 32 as the midpoint for "30+ hours." Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Click the icon to view the pie chart. First construct the frequency distribution. Weekly study hours Class Frequency, f 0-4 5-9 0-4 hours (3 people) 10-14 5-9 hours (14 people) 10-14 hours (19 people) 15-19 15-19 hours (21 people) 20-24 20-24 hours (14 people) O 25-29 hours (13 people) 25-29 30+ hours (4 people) 30+ Print DoneUse the dataset below to fill in the blanks. The space between the data and the blanks isprovided so that you can show each data value's deviation and each data value's deviation squared.Sixteen families were selected at random and the number of children in each was recorded 0 0 0 1 1 2 2 2 2 2 3 3 4 6 8 12
- Data Set 1: 2,2,3,4,4 Solve for the RANGE.Solve for the VARIANCESolve for the STANDARD DEVIATION.Solve for COEFFICIENT OF VARIATION.Determine the mean of the data.Q1: Using Excel functions, find the number of students, the mean weight, the sum of weights, the variance of the weights, and the standard deviation weights given below. Student Weight Mother Parker 127 Old Man Parker 176 Flick 92 Ralphie 83 Randy 58 Miss Shields 116 Schwartz 78 Scut Farkus 93 Grover Dill 66 Count Mean Sum Variance Standard Deviation
- The numbers of courses taught per semester by a random sample of university professors are shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Make a frequency distribution for the data. X 1 3 f Number of professors 25- 20- 15- 10- 4 20 23 15 1 2 3 4 Number of courses taught per semesterIn Exercise, we have provided simple data sets for you to practice the basics of finding measures of variation. For each data set, determine the a.range.b.sample standard deviation. 4, 0, 5Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to P34, the 84th percentile. This is the temperature reading separating the bottom 84% from the top 16%. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents P ? Choose the correct graph below. 84 A. В. OC. D. Ay X The temperature for P84 is approximately (Round to two decimal places as needed.)