Create a probability distribution using the data which shows how many cartons of the wine cooler were bought per customer in a month. Calculate the mean and the standard deviation of your probability distribution. Calculate the probability that exactly 3 six packs will be bought in a month. Calculate the probability that between 4 and 8 six packs will be bought in a month. Calculate the probability that at least 5 six packs will be bought in a month. Calculate the probability that no more than 5 six packs will be bought in a month. RESULTS OF CONCEPT RATING FOR […]
developer
A medical statistician wants to estimate the average weight loss of people who are on a new diet plan.
A medical statistician wants to estimate the average weight loss of people who are on a new diet plan. In a preliminary study, he guesses that the standard deviation of the population of weight loss is about 9 pounds. How large a sample should he take to estimate the mean weight loss to within 3 pounds, with 91% confidence?
Ecommerce.com a large internet retailer is studying the lead time (elapsed time between when an order is placed and when it is filled) for a sample…
1. Ecommerce.com a large internet retailer is studying the lead time (elapsed time between when an order is placed and when it is filled) for a sample of recent orders. The lead times are reported in days Lead Times (days) Frequency 0 up to 5 6 5 up to 10 7 10 up to 15 12 15 up to 20 8 20 up to 25 7
An urban planner claims that nationally 20% of all families renting condominiums move during the year.
An urban planner claims that nationally 20% of all families renting condominiums move during the year. A random sample of 200 families renting condominiums in a large development revealed that 28% had moved during the past year. Construct a 90% confidence interval for the population percent of families who moved during the past year.
The average age for UVU students is 24.6 years, with a standard deviation of 2.8 years. Assume a normal distribution.
The average age for UVU students is 24.6 years, with a standard deviation of 2.8 years. Assume a normal distribution. What is the probability of selecting a sample of 200 students with an average age that is less than 24?
