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Please provide an answer to the questions below, if possible using Excel and show your formulas.
A salesperson goes door-to-door in a residential area to demonstrate the use of a new household appliance to potential customers. She has found from her years of experience that after demonstration, the probability of purchase (long run average) is 0.30. To perform satisfactory on the job, the salesperson needs at least four orders this week.
If she performs 15 demonstrations this week, what is the probability of her being satisfactory?
What is the probability of between 4 and 8 (inclusive) orders?
If the salesperson wants to be at least 90 percent confident of getting satisfactory evaluation in her job this week, how many demonstrations should she perform?
How would your answers to above questions change if the probability of success increases (say by training) to 0.35?
How much would ING be willing to pay if the General Counsel could arrange for an absolutely reliable mock trial?
The p-value for a test statistic is .085, what is the minimum level of significance required to reject the null hypothesis?
Make an interval estimate the population means score for the daycare children so that you are 95% confident that the true mean is in your interval.
In testing the difference between two means from two independent populations, the sample sizes do not have to be equal to be able to use the Z statistic.
What is the value of the sample test statistic? (Round your answer to two decimal places.) Find the P-value of the test statistic. (Round your answer to four decimal places.)
Find the 90%, 95% and 99% confidence intervals for the proportion of all voters who favor the issue. How many more voters should we include in the sample if we need to reduce the margin of error by half?
A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey indicated that the mean time per week is 20 hours, with a standard deviation of 5.5 hours
Consider the experiment of rolling a pair of dice. Suppose that we are interested in the sum of the face values showing on the dice.
What information is provided by the sign (= or -) of the Pearson correlation? What information is provided by numerical value of the Pearson correlation?
Temperature in certain city for the month of June follows a uniform distribution over the interval 61° F to 91° F. Find the temperature which 90% of the June days exceeds?
Black Hole Pizza Parlor instructs its cooks to put a "handful" of cheese on each large pizza. A random sample of six such handfuls were weighed.
How many subjects must be tested to determine the effectiveness of the product?
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