Question

Suppose a random sample of 30 customers is taken to test a company’s claim that 88%...

Suppose a random sample of 30 customers is taken to test a company’s claim that 88% of customers are satisfied with their dog food. Assume trials are independent. What is the probability at least 22 customers are satisfied? Question 12 options: 1) .0278 2) .9931 3) .9722 4) .0069

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Suppose a random sample of 30 customers is taken to test a company’s claim that 85%...
Suppose a random sample of 30 customers is taken to test a company’s claim that 85% of customers are satisfied with their dog food. Assume trials are independent. What is the probability that at least 22 of the customers are satisfied? Also, what is the probability 8 customers are not satisfied?
Suppose a random sample of 30 customers is taken to test a company’s claim that 85%...
Suppose a random sample of 30 customers is taken to test a company’s claim that 85% of customers are satisfied with their dog food. Assume trials are independent. What is the probability 8 customers aren't satisfied?
Exhibit: Lunch Customers A random sample of 68 lunch customers was taken at a restaurant. The...
Exhibit: Lunch Customers A random sample of 68 lunch customers was taken at a restaurant. The average amount of time the customers in the sample stayed in the restaurant was 42 minutes with a standard deviation of 11 minutes. (For this exhibit, avoid rounding intermediate steps and round your final solutions to 4 decimal places) 34. Construct 88% confidence interval for the population mean and provide the lower bound of the confidence interval below. 35. Refer to the Exhibit Lunch...
A random sample of 30 binomial trials resulted in 12 successes. Test the claim that the...
A random sample of 30 binomial trials resulted in 12 successes. Test the claim that the population proportion of successes does not equal 0.50. Use a level of significance of 0.05. (a) Can a normal distribution be used for the  distribution? Explain. Yes, n·p and n·q are both greater than 5 .No, n·p and n·q are both less than 5.     Yes, n·p and n·q are both less than 5 .No, n·p is greater than 5, but n·q is less than 5....
Suppose that the random sample is taken from a normal distribution N(8,9), and the random sample...
Suppose that the random sample is taken from a normal distribution N(8,9), and the random sample is between 1 to 25. Find the distribution of the sample mean. Find probability that the sample mean is less than or equal to 8.8 and the sample variance is less than or equal to 12.45, where the probabilities are independent. Find probability that the sample mean is less than 8+(.5829)S, where S is the sample standard deviation.
A sample of 16 cookies is taken to test the claim that each cookie contains at...
A sample of 16 cookies is taken to test the claim that each cookie contains at least 9 chocolate chips. The average number of chocolate chips per cookie in the sample was 7.875 with a standard deviation of 1. Assume the distribution of the population is normal. Please give the answers clearly labeled in order. Thanks :) a. State the null and alternative hypotheses. b. Using a critical value, test the hypothesis at the 1% level of significance. c. Using...
The manager of a grocery store has taken a random sample of 100 customers. The average...
The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes. The population standard deviation is known to be 0.5 minute. We want to test to determine whether or not the mean waiting time of all customers is significantly more than 3 minutes. The test statistic is _____. a. 1.64 b. 2.00 c. 1.96 d. .056
The manager of a grocery store has taken a random sample of 4 customers. The average...
The manager of a grocery store has taken a random sample of 4 customers. The average length of time it took the customers in the sample to check out was 6 minutes. The population standard deviation is known to be 0.1 minutes. We want to test to determine whether or not the mean waiting time of all customers is significantly more than 7 minutes. Use a significance level of (alpha = 0.01). Please show work.
3. [8 marks] Suppose a survey is conducted by Ipsos, a Canadian market research polling firm,...
3. [8 marks] Suppose a survey is conducted by Ipsos, a Canadian market research polling firm, on user satisfaction with cell phone coverage across the country. They sample 10 customers at random without replacement. Assume all sampled customers are independent. Suppose 30% of users nationwide are satisfied with their cell phone coverage. a) [5 marks] Calculate the probability that 3 or more of the 10 randomly sampled cell phone customers are satisfied with their cell phone coverage. b) [1 mark]...
Question #1 A random sample of 20 binomial trials resulted in 8 successes. Test the claim...
Question #1 A random sample of 20 binomial trials resulted in 8 successes. Test the claim that the population proportion of successes does not equal 0.50. Use a level of significance of 0.05.A random sample of 20 binomial trials resulted in 8 successes. Test the claim that the population proportion of successes does not equal 0.50. Use a level of significance of 0.05. (c) Compute p̂. Compute the corresponding standardized sample test statistic. (Round your answer to two decimal places.)...