Question

In a sample of 60 stores of a certain company, 50 violated a scanner accuracy standard.

In a sample of 60 stores of a certain company, 50 violated a scanner accuracy standard. It has been demonstrated that the conditions for a valid large-sample confidence interval for the true proportion of the stores that violate the standard were not met. Determine the number of stores that must be sampled in order to estimate the true proportion to within 0.04 with 95% confidence using the large-sample method. 


The number of stores that must be sampled is _______ .

2 0
Add a comment Improve this question Transcribed image text
✔ Recommended Answer
Answer #1

To bind Somple &ee have fom) Lo som 8331-0833 334 . 이 :334 |

Add a comment
Know the answer?
Add Answer to:
In a sample of 60 stores of a certain company, 50 violated a scanner accuracy standard.
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Similar Homework Help Questions
  • A gigantic warehouse stores approximately 50 million empty aluminum beer and soda cans. Recently, a fire...

    A gigantic warehouse stores approximately 50 million empty aluminum beer and soda cans. Recently, a fire occurred at the warehouse. The smoke from the fire contaminated many of the cans with blackspot, rendering them unusable. A statistician was hired by the insurance company to estimate p, the true proportion of cans in the warehouse that were contaminated by the fire. How many aluminum cans should be randomly sampled to estimate p to within 0.03 with 95% confidence? The statistician should...

  • Of 565 samples of seafood purchased from various kinds of food stores in different regions of...

    Of 565 samples of seafood purchased from various kinds of food stores in different regions of a country and genetically compared to standard gene fragments that can identify the species, 51% were mislabeled. a) Construct a 99% confidence interval for the proportion of all seafood sold in the country that is mislabeled or mislabeled or misidentified. b) Explain what your confidence interval says about seafood sold in the country. c) A government spokesperson claimed that the sample size was too...

  • A certain region would like to estimate the proportion of voters who intend to participate in...

    A certain region would like to estimate the proportion of voters who intend to participate in upcoming elections. A pilot sample of 50 voters found that 32 of them intended to vote in the election. Determine the additional number of voters that need to be sampled to construct a 95​% interval with a margin of error equal to 0.04 to estimate the proportion. The region should sample _____ additional voters.

  • Vitamin D, whether ingested as a dietary supplement or produced naturally when sunlight falls upon the...

    Vitamin D, whether ingested as a dietary supplement or produced naturally when sunlight falls upon the skin, is essential for strong, healthy bones. The bone disease rickets was largely eliminated during the 1950s, but now there is concern that a generation of children more likely to watch TV or play computer games than spend time outdoors is at increased risk. A healthcare provider took a sample of 285 randomly selected children and found 20% of them were deficient in vitamin...

  • A gigantic warehouse stores approximately 70 million empty aluminum beer and soda cans. Recently, a fire...

    A gigantic warehouse stores approximately 70 million empty aluminum beer and soda cans. Recently, a fire occurred at the warehouse. The smoke from the fire contaminated many of the cans with blackspot, rendering them unusable. A statistician was hired by the insurance company to estimate p, the true proportion of cans in the warehouse that were contaminated by the fire. How many aluminum cans should be randomly sampled to estimate p to within 0.01 with 95% confidence? cans to estimate...

  • A) A certain region would like to estimate the proportion of voters who intend to participate...

    A) A certain region would like to estimate the proportion of voters who intend to participate in upcoming elections. A pilot sample of 25 voters found that 17 of them intended to vote in the election. Determine the additional number of voters that need to be sampled to construct a 95​% interval with a margin of error equal to 0.06 to estimate the proportion. The region should sample ____ additional voters. B) Determine the sample size needed to construct a...

  • please answer all parts in detail thank u :) A random sample of 120 parts was...

    please answer all parts in detail thank u :) A random sample of 120 parts was taken from a big lot and was found that 111 of them met specification (a) [5 points] Construct a 99% confidence interval for population proportion p of parts that meet specification. (b) [5 points] Suppose that quality engineer wants to estimate the true proportion of parts that meet specification to within 0.04 with 95% confidence. How many parts should this quality engineer take? Assume...

  • The standard deviation of test scores on a certain achievement test is 11.1. A random sample...

    The standard deviation of test scores on a certain achievement test is 11.1. A random sample of 60 scores on this test had a mean of 75.4. Based on this sample, find a 95% confidence interval for the true mean of all scores. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. What is the lower limit of the 95% confidence interval? What is the upper limit...

  • A previous random sample of 4000 U.S. citizens yielded 2250 who are in favor of gun...

    A previous random sample of 4000 U.S. citizens yielded 2250 who are in favor of gun control legislation. How many citizens would need to be sampled for a 95% confidence interval to estimate the true proportion within 2%

  • A random sample of 60 suspension helmets used by motorcycle riders and automobile race-car drivers was...

    A random sample of 60 suspension helmets used by motorcycle riders and automobile race-car drivers was subjected to an impact test, and on 19 of these helmets some damage was observed (a) Find a 95% two-sided confidence interval on the true proportion of helmets of this type that would show damage from this test. Round your answers to 3 decimal places. (b) Using the point estimate of p obtained from the preliminary sample of 60 helmets, how many helmets must...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT