A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics exam is equal to 45 minutes. The correct hypothesis statement would be

A random sample of computer users were asked which browser they primarily relied on for surfing the Internet and whether this browser was installed on a desktop or laptop computer. The following contingency table shows these results.BrowserDesktopLaptopInternet Explorer1856Firefox737Chrome2477Safari318Other37The probability that a randomly selected person from this sample used the Internet Explorer and the Firefox browser is ________.

The federal government would like to test the hypothesis that the average age of men filing for Social Security is higher than the average age of women set using α = 0.05 with the following data:​MenWomenSample mean64.5 years63.6 yearsSample size3539Population standard deviation3.0 years3.5 yearsIf Population 1 is defined as men and Population 2 is defined as women, the correct hypothesis statement for this hypothesis test would be

The medication ordered for __________ will depend on the __________ of the infection.

The average natural gas bill for a random sample of 26 homes in the 19808 zip code during the month of March was $305.30 with a sample standard deviation of $46.50. The critical value for a 95% confidence interval around this sample mean is ________.

The following contingency table shows the number of customers who bought various brands of digital cameras at Walmart and Best Buy.Camera BrandBest BuyWalmartCanon2132Nikon837Olympus1630Sony512Other4940The probability that a randomly selected customer from this sample bought a Canon camera or a Nikon camera is ________.

________data are values that correspond to specific measurements taken over a range of time periods.

The ________of Events A and B represents the number of instances in which both Events A and B occur at the same time.

The following data represents the number of Sony TVs sold per day at a particular Costco over a random sample of five business days.92775The range of this sample is ________.

The following table shows the frequency distribution of the credit scores for a random sample of homeowners who recently refinanced their mortgage at Delaware Bank.Credit ScoreFrequency700 to under 7207720 to under 74014740 to under 76025760 to under 78016780 to under 8008Calculating the probability that a randomly homeowner has a credit score of 760 to under 780 is using ________ probability.