The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is 3408 miles, with a variance of 249,001 . If he is correct, what is the probability that the mean of a sample of 36 cars would be less than 3245 miles? Round your answer to four decimal places.

Here are the test scores of a class of learners: \( 100,100,99,98,92,91,91,90,88,87,87,85,85,85,80,79,76,72,67,66,45 \) a) What is the average score (mean) of the class for this test?

Find the mean of: \( 1.8,1.7,1.3,1.1,1.2,1.6,1.8 \) A. 1.6 B. 1.4 C. 1.8 D. 1.1 E. 1.5

11) Na distribuição de valores iguais, o Desvio padrão é: 12) \( \begin{array}{llll}\text { a) ( ) negativo } & \text { c) ( ) zero } & \text { b) ( ) a unidade } & \text { d) ( ) positivo }\end{array} \)

e) In order to get a better idea of how a given data point relates to other data, it is important to get an idea of how spread out the data are. One way of doing this is by using the range. The range is the distance between the highest and lowest data points in a set. What is the 'range' of the scores for this test?

A national food brand wants to launch a new chip flavor. They run a test study and offer 3 new flavors in select stores around the country.What's the best measure for determining which flavor to launch?Total revenue before and after offering the new flavorsSocial media surveysSales data and frequency of repeat purchases for the new flavorsDiscussions with customers in the stores offering the new flavorsTotal sales for stores offering the new chips against those that are not