Question

78% of U.S. homes have an over the counter microwave in their homes. In a random...

  1. 78% of U.S. homes have an over the counter microwave in their homes. In a random sample of 250 homes, what is the probability that greater than 50 do not have over the counter microwave?
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Refer Standard normal table/Z-table to find the probability OR use excel formula "=NORM.S.DIST(-0.6870, TRUE)" to find the probability.
0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In what ways have homes in the U.S. changed in both appearance and function over time?...
In what ways have homes in the U.S. changed in both appearance and function over time? Based on what you learned in this module, how do you think housing will change in terms of appearance and function over the next 50 years?
Suppose the selling price of homes in the United States is skewed right with a mean...
Suppose the selling price of homes in the United States is skewed right with a mean of $350,000 and a standard deviation of $160,000. (4 pts) If we record the selling price of 40 randomly selected U.S. homes, what will be the shape of the distribution of sample means? What will be the mean of this distribution? What will be the standard deviation of this distribution? Indicate how you arrived at your conclusions. (6 pts) What is the probability that...
The U.S. Census Bureau reported that the mean area of U.S. homes built in 2012 was...
The U.S. Census Bureau reported that the mean area of U.S. homes built in 2012 was 2505 square feet. A simple random sample of 19 homes built in 2013 had a mean area of 2738 square feet with a standard deviation of 280 feet. Can you conclude that the mean area of homes built in 2013 is greater than the mean area of homes built in 2012? It has been confirmed that home sizes follow a normal distribution. Use a...
The U.S. Census Bureau reported that the average area of U.S. homes built in 2018 was...
The U.S. Census Bureau reported that the average area of U.S. homes built in 2018 was 2,623. square feet. A simple random sample of 38 homes, had an average of 2,715 square feet, with a standard deviation of 249 square feet. Assume the population is approximately normally distributed. Test the claim that the average square feet of homes built in 2019 is more than 2018 by conducting a hypothesis test at the .01 significant level?
Question In a large population, about 45% of newly constructed single-family homes have more than three...
Question In a large population, about 45% of newly constructed single-family homes have more than three bedrooms. A researcher takes a random sample of 15 homes and surveys whether they have more than three bedrooms. Use the binomial distribution to compute the probability that exactly 6 of the homes in the sample have more than three bedrooms. Identify the following information required to find the probability of new homes with more than three bedrooms. Provide your answer below: n =...
A Realtor claims that no more than half of the homes he sells are sold for...
A Realtor claims that no more than half of the homes he sells are sold for less than the asking price. When reviewing a random sample of 14 sales over the past year, he found that actually 10 were sold below the asking price. (a) The assumption of normality is justified. Yes No (b-1) Calculate a p-value for the observed sample outcome, using the normal distribution. (Round your z-value to 2 decimal places. Round your answer to 4 decimal places.)...
A Realtor claims that no more than half of the homes he sells are sold for...
A Realtor claims that no more than half of the homes he sells are sold for less than the asking price. When reviewing a random sample of 13 sales over the past year, he found that actually 11 were sold below the asking price. (a) The assumption of normality is justified. Yes No (b-1) Calculate a p-value for the observed sample outcome, using the normal distribution. (Round your z-value to 2 decimal places. Round your answer to 4 decimal places.)...
The average price of homes sold in the U.S. in the past year was $220,000. A...
The average price of homes sold in the U.S. in the past year was $220,000. A random sample of 81 homes sold this year showed an average price of $210,000. It is known that the standard deviation of the population is $36,000. At level of significance (a) 0.05, conduct the hypothesis test to determine if there has been a significant decrease in the average price homes. With Ha: µ < 220,000 and test statistic Z = -2.50, what is the...
Direct Satellite Television It is believed that 25% of U.S. homes have a direct satellite television...
Direct Satellite Television It is believed that 25% of U.S. homes have a direct satellite television receiver. Round up your final answers to the next whole number. How large a sample is necessary to estimate the true population of homes that have a direct satellite television receiver with 90% confidence and within 3 percentage points?
Suppose a large shipment of microwave ovens contained 20 % defectives. If a sample of size...
Suppose a large shipment of microwave ovens contained 20 % defectives. If a sample of size 336 is selected, what is the probability that the sample proportion will be greater than 16 % ? Round your answer to four decimal places.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT