Question: 3, Given the data value x = 56 in a sample with 32 values, which digit would be the stem value in a stem and

3, Given the data value x = 56 in a sample with 32 values, which digit would be the stem value in a stem and leaf diagram?

7, Which value defines the 60th percentile for this data set?

17 20 25 26 29 33 34 47 50 54 55 59 70 73 77 81 81 82 87 94

9, A marketing company estimates about 35% of the population is interested in purchasing a vehicle within the next year. What is the probability a random sample of 81 individuals will have more than 38% of it interested in purchasing a vehicle in the next year?

10, A random sample of 225 individuals finds 31% of them would be willing to purchase a week at a vacation resort. What is the 90% confidence interval for the population proportion of those that would be willing to purchase a week at the resort?

12, Given that Z is the standard normal random variable, what is P(Z > -0.28) ?

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