DIRECTIONS: enter the correct phrase, without the quotes, in each blank. Enter either "greater than" or "less than" in the first blank. Enter either "not be" or "be" in the second blank, and enter either "increasing" or "decreasing" in the third blank. A set of 15 data values has a mean of 80 and a standard devaiton of six. Two more value are added to the data set so there are now 17 data values. If the two values added are 60 and 100, the new standard deviation of all 17 values will be A six because the values of 60 and 100 would A/ A the spread of the data extreme values, thus

Do A/B

Lionel has just gone grocery shopping. The mean cost for each item in his bag was $3.19. He bought a total of 7 items and the prices 6 of those items are listed below. $2.16,$3.24,4.03,$3.27,$1.87,$3.86. Determine the price of the 7th item in this bag

if the mean of five values is 8.8 and four of the values are 7, 13, 6, and 9 find the fifth value.

Three cars are driving on a racetrack. The mean speed of the three cars is 100 miles per hour. Car X drives 109 miles per hour and Car Y drives 117 miles per hour. Use the mean to estimate the speed of Car Z. Then find the actual speed of Car Z.

Answer 3 and 4 only

The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 40 ounces and a standard deviation of 10 ounces. Use the Standard Deviation Rule, also known as the Empirical Rule. Suggestion: sketch the distribution in order to answer these questions. a) 99.7% of the widget weights lie between and b) What percentage of the widget weights lie between 20 and 70 ounces? c) What percentage of the widget weights lie above 30 ? Question Help: Video Message instructor %

Joselyn hopes to receive a grade of B or better in her statistics class. Currently she has scored 75, 83, and 81 on her three in-class tests and also has a homework average of 88. Her professor calculates the class grade by finding the mean of five grades: three in-class tests, the homework average and the final exam. What is the minimum score Joselyn must earn on the final exam to have a class grade (mean) of 80? A. 67 B. 95 C. 70 D. 73

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Find the skew of this data set: 2,2,3,4,5,6 (Answer : 3 decimal place)