Bob Nale is the owner of Nale's Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 2.50 gallons. From his records, he selects a random sample of 55 sales and finds the mean number of gallons sold is 6.30. a. What is the point estimate of the population mean? (Round your answer to 2 decimal places.) Point estimate b. Develop a 99% confidence interval for the population mean. (Use z Distribution Table) (Round your answers to 2 decimal places.)

How many permutations of the letters "EXAM" are there? Discrete math

How many ways can an IRS auditor select 5 of 10 tax returns for an audit?

Redistricting and House Elections The 2010 census led to the loss of two house seats in New York and Ohio, the loss of one House seat in Pennsylvania, the gain of two house seats in Florida and the gain of four House seats in Texas. Consider the following approximate vote counts for all House districts in these states in 2010 (before redistricting) and 2012 (after redistricting). All figures are in thousands of votes. Votes for other parties are neglected. a. Find the percentages of votes cast for Republican and Democratic candidates in 2012 and 2012. b. Find the percentages of House seats that were won by republican and democratic candidates in 2010 and 2012. c. Explain whether the distributions of votes reflect the distributions of House seats. d. Discuss whether redistricting based on the 2010 census affected the distributions of votes and representatives. VOTES FOR VOTES FOR DEMOCRATIC REPUBICAN CANDIDATES CANDIDATES REPUBLICAN SEATS (THOUSANDS) (THOUSANDS) 2053 1611 13 2620 2412…

Is award( Olympic, Nobel, Academy) nominal or ordinal categorical

You may need to use the appropriate appendix table or technology to answer this question. Last year, 41% of business owners gave a holiday gift to their employees. A survey of business owners conducted this year indicates that 30% plan to provide a holiday gift to their employees. Suppose the survey results are based on a sample of 80 business owners. (a) How many business owners in the survey plan to provide a holiday gift to their employees this year? _______business owners (b) Suppose the business owners in the sample did as they plan. Compute the p-value for a hypothesis test that can be used to determine if the proportion of business owners providing holiday gifts has decreased from last year. Find the value of the test statistic. (Round your answer to two decimal places.) __________   Find the p-value. (Round your answer to four decimal places.) p-value =_____________ (c) Using a 0.05 level of significance, would you conclude that the proportion of business owners…

List the outcomes (in numerical order, separated by commas) for rolling ONE six-sided die.

How many ways can an irs auditor select 3 tax returns out of 10 for an audit

A deli offers 12 different toppings. How many different choices of 5 toppings are there?

Using the roll of a six-sided die and the flip of a coin, in how many ways can you obtain a heads and an even number?