Bob Nale is the owner of Nale's Texaco GasTown. Bob would like to estimate the mean number of litres (L) of gasolineCustomers. Assume the number of litres sold follows the normal distribution with a standard deviation of 2 L. From his reselects a random sample of 10 sales and finds the mean number of litres sold is 32.a. What is the point estimate of the population mean? (Round the final answer to the nearest whole number.)The point estimate of the population mean is32 litres.b. Develop a 95% confidence interval for the population mean. (Round the final answers to 3 decimal places.)The 95% confidence interval for the population mean is between30.761 and 33.239c Interpret the meaning of part (b).100 such intervals were determined, the population (Click to select) v would be included in aboutintervals.

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Answered: Bob Nale is the owner of Nale's Texaco…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Help please.
The table below represents a frequency distribution of the heights in centimeters of all 50 members of a club: Height (cm) 160 ≤x≤170 170
You would like to know the average hourly wage in your area. You ask 20 people, and find a sample mean of 8.50 dollars. The population standard deviation is 2.89 dollars. Assume that distribution is normal. a. Give a point estimate for the mean hourly wage.b. Give the 90% margin of error for the mean. c. Write a sentence about the results. The average hourly wage in my area is about ________, give or take _______.
A distribution has a std deviation of 5. Describe the location of each of the following z score in terms of the position relative to the mean. For example, a z=+1.0 is a location that is 4 points above the mean a. Z=+2.0 b. Z=+.50 с. Z=-2.5 d. Z=-1.50
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 68 miles per hour, with a standard deviation of 3 miles per hour. Estimate the percent of vehicles whose speeds are between 65 miles per hour and 71 miles per hour. (Assume the data set has a bell-shaped distribution.) Approximately nothing% of vehicles travel between 65 miles per hour and 71 miles per hour.
INTERPRET THE result of the data: The scores of 6 job applicants. P.S. treat this data as if it were sample or a population data. Mean = 8.5 Range = 6 Mean deviation : 1.83 Sample Variance: 5.5 Population variance: 4.58 Population deviation: 2.14 Sample deviatiin : 5.5
The average production cost for major movies is 66 million dollars and the standard deviation is 18 million dollars. Assume the production cost distribution is normal. Suppose that 50 randomly selected major movies are researched. Answer the following questions. Give your answers in millions of dollars, not dollars. Round all answers to 4 decimal places where possible.
A manufacturer of bolts has a quality-control policy that requires it to destroy any bolts that are more than 4 stan deviations from the mean. The quality-control engineer knows that the bolts coming off the assembly line have n length of 14 cm with a standard deviation of 0.05 cm. For what lengths will a bolt be destroyed? Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to one decimal place as needed.) OA. A bolt will be destroyed if the length is less than OB. A bolt will be destroyed if the length is less than OC. A bolt will be destroyed if the length is greater than OD. A bolt will be destroyed if the length is between cm and cm or greater than cm. cm. cm. cm.
For the sample data 7, 9, 10, 11, 13, 22find the standard deviation ( give your answer in three decimal places). Answer:
Q) The RATES of a SWEET BOX follows a normal distribution with a mean of $2.20 and a standard deviation of $0.20. Find the RATE for which 10.23% of sweet boxes are exceeded. Round your answer to nearest cent (hundredth) if necessary.

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