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8, The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than...
Determine if the outcome is unusual. Consider as unusual any result that differs from the mean...
Determine if the outcome is unusual. Consider as unusual any result that differs from the mean by more than 2 standard deviations. That is, unusual values are either less than μ - 2σ or greater than μ + 2σ. The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4 ounces. Suppose that 800 jawbreakers are selected at random from the production lines. Would it be unusual for this sample of 800 to contain 423...
3. The table below describes the smoking habits of a group of asthma sufferers Nonsmoker Occasional...
3. The table below describes the smoking habits of a group of asthma sufferers Nonsmoker Occasional smoker Regular smoker Heavy Smoker Total Men 313 49 122 135 Women 428 123 76 37 Total a. (10 points) If one person is randomly selected, find the probability that the person is a regular smoker given that the person is a man. Show how you get your answer. Answer as a percent rounded to 1 decimal place. (EX: 0.1267 - 12.7%) b. (10...
3) A candy company claims that 22% of the jelly beans in its spring mix are...
3) A candy company claims that 22% of the jelly beans in its spring mix are pink. Suppose that the candies are packaged at random in bags containing about 400 jelly beans. A class of students opens several bags, counts the various colors of jelly beans, and calculates the proportion that are pink. In one bag, the students found 19% of the jelly beans were pink. a) What is the probability that a bag will contain fewer than 19% pink...
1. Refer to the table which summarizes the results of testing for a certain disease. Positive...
1. Refer to the table which summarizes the results of testing for a certain disease. Positive Test Result Negative Test Result Subject has the disease 153 28 Subject does not have the disease 42 279 a. (10 points) If one of the results is randomly selected, what is the probability that it is a false negative (test indicates the person does not have the disease when in fact they do)? Show how you get your answer. Answer as a percent...
9. A large candy manufacturer produces, packages and sells packs of candy targeted to weigh 52...
9. A large candy manufacturer produces, packages and sells packs of candy targeted to weigh 52 grams. A quality control manager working for the company was concerned that the variation in the actual weights of the targeted 52-gram packs was larger than acceptable That is, he was concerned that some packs weighed significantly less than 52-grams and some weighed significantly more than 52 grams. In an attempt to estimate o, the standard deviation of the weights of all of the...
A large candy manufacturer in Slidell produces, packages, and sells packs of candy targeted to weigh...
A large candy manufacturer in Slidell produces, packages, and sells packs of candy targeted to weigh 500 grams. The weight of a pack of candy is normally distributed with the mean μ=500 grams, but Parker Sanderson, a quality control manager working for the company, was concerned that the variation in the actual weights of the targeted 500-gram packs was larger than acceptable. That is, he was concerned that some packs weighed significantly less than 500-grams and some weighed significantly more...
9) A candy company claims that 12% of its plain candies are orange, and a sample...
9) A candy company claims that 12% of its plain candies are orange, and a sample of 100 such candies is randomly selected. a. Find the mean and standard deviation for the number of orange candies in such groups of 100. μ =___________ (Do not round). σ=______________ (Round to one decimal place as needed). A random sample of 100 candies contains 16 orange candies. Is this result unusual? Does it seem that the claimed rate of 12% is wrong? A....
An attorney claims that more than 25% of all lawyers advertise. A random sample of 200...
An attorney claims that more than 25% of all lawyers advertise. A random sample of 200 lawyers in a certain city showed that 63 had used some form of advertising. At a 0.05, what would be your conclusion regarding the hypothesis test? O Accept the null hypothesis and the test is insignificant. O Reject the null hypothesis and the test is significant O Cannot be determined. A researcher wishes to see if the average weights of newborn male infants are...
3. A company claims that the new boxes of detergents that it sells contain more than...
3. A company claims that the new boxes of detergents that it sells contain more than 500 grams of detergent. From past experience the company knows that the quantity of t in a box is normally distributed with a mean of 500 grams and a standard deviation of 120 grams. A market analyst bought 64 boxes of the detergent and found that the average weight is 520 grams. Determine if the company's claim is legitimate at the 0.05 level of...
A company that produces food supplements is under investigation by trading standards for making false claims....
A company that produces food supplements is under investigation by trading standards for making false claims. The company produces protein bars, stating on the package of its product that they contain 20 grams of whey proteins and 10 grams of proteins from a vegetable source, cheaper than whey proteins. This is thought not to be true after a number of complaints were filed against the company by retailers. It is in fact believed that the true mean whey protein content...
3. The table below describes the smoking habits of a group of asthma sufferers Nonsmoker Occasional smoker Regular smoker Heavy Smoker Total Men 313 49 122 135 Women 428 123 76 37 Total a. (10 points) If one person is randomly selected, find the probability that the person is a regular smoker given that the person is a man. Show how you get your answer. Answer as a percent rounded to 1 decimal place. (EX: 0.1267 - 12.7%) b. (10...
3) A candy company claims that 22% of the jelly beans in its spring mix are pink. Suppose that the candies are packaged at random in bags containing about 400 jelly beans. A class of students opens several bags, counts the various colors of jelly beans, and calculates the proportion that are pink. In one bag, the students found 19% of the jelly beans were pink. a) What is the probability that a bag will contain fewer than 19% pink...
1. Refer to the table which summarizes the results of testing for a certain disease. Positive Test Result Negative Test Result Subject has the disease 153 28 Subject does not have the disease 42 279 a. (10 points) If one of the results is randomly selected, what is the probability that it is a false negative (test indicates the person does not have the disease when in fact they do)? Show how you get your answer. Answer as a percent...
9. A large candy manufacturer produces, packages and sells packs of candy targeted to weigh 52 grams. A quality control manager working for the company was concerned that the variation in the actual weights of the targeted 52-gram packs was larger than acceptable That is, he was concerned that some packs weighed significantly less than 52-grams and some weighed significantly more than 52 grams. In an attempt to estimate o, the standard deviation of the weights of all of the...
An attorney claims that more than 25% of all lawyers advertise. A random sample of 200 lawyers in a certain city showed that 63 had used some form of advertising. At a 0.05, what would be your conclusion regarding the hypothesis test? O Accept the null hypothesis and the test is insignificant. O Reject the null hypothesis and the test is significant O Cannot be determined. A researcher wishes to see if the average weights of newborn male infants are...
3. A company claims that the new boxes of detergents that it sells contain more than 500 grams of detergent. From past experience the company knows that the quantity of t in a box is normally distributed with a mean of 500 grams and a standard deviation of 120 grams. A market analyst bought 64 boxes of the detergent and found that the average weight is 520 grams. Determine if the company's claim is legitimate at the 0.05 level of...
A company that produces food supplements is under investigation by trading standards for making false claims. The company produces protein bars, stating on the package of its product that they contain 20 grams of whey proteins and 10 grams of proteins from a vegetable source, cheaper than whey proteins. This is thought not to be true after a number of complaints were filed against the company by retailers. It is in fact believed that the true mean whey protein content...
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