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A random sample of 25 boxes of laundry detergent from a Normal population distribution showed that...
please answer the following problems numerically 2. Does an average box of cereal more than 368...
please answer the following problems numerically
2. Does an average box of cereal more than 368 grams of cereal? A random sample of 49 boxes showed sample mean = 360. The company has specified Ito be 15 grams and the distribution to be normal. Test at the IM00.05 level. 3. Does an average box of cereal less than 378 grams of cereal? A random sample of 64 boxes showed sample mean = 372. The company has specified sample standard deviationſ|to...
Does an average box of cereal contain more than 370 grams of cereal?
Does an average box of cereal contain more than 370 grams of cereal? A random sample of 25 boxes showed x̄= 385. The company has specified σ to be 15 grams. Test at the .05 level. Zα = 1.645
6 points 1. Does an average pack of banana bread cookies weighs 40 grams? A random...
6 points 1. Does an average pack of banana bread cookies weighs 40 grams? A random sample of 35 boxes showed a mean of 41.75 grams. The company has specified the population standard deviation to be 5 grams. Test at the 0.05 level of significance. *
. Suppose a random sample of 25 is taken from a population that follows a normal distribution wit...
. Suppose a random sample of 25 is taken from a population that follows a normal distribution with unknown mean and a known variance of 144. Provide the null and alternative hypotheses necessary to determine if there is evidence that the mean of the population is greater than 100. Using the sample mean, Y, as the test statistic and a rejection region > k}, find the value of k so that α = 0.15. of the form - Using the...
The viscosity of a liquid detergent is supposed to average 800 centistokes at 25° C. A...
The viscosity of a liquid detergent is supposed to average 800 centistokes at 25° C. A random sample of 16 batches of detergent is collected, and the average viscosity is 812. Suppose we know that the standard deviation of viscosity is σ = 25 centistokes: (a) State the hypotheses that should be tested, (b) Test these hypotheses using a = 0.05. What are your conclusions?, (c) What is the P-value for the test?, (d) Find a 95 percent confidence interval...
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 random sample of size 137 was taken from a population with a population mean 25...
A random sample of size 137 was taken from a population with a population mean 25 and a population standard deviation 5. Determine each of the following about the sampling distribution of the sample mean. Round your answer to at least 3 decimal places where appropriate. a) μx_= b) σx_= c) Can we conclude that the sampling distribution of the sample mean is approximately normal? YesNoClick for List
2.17. The viscosity of a liquid detergent is supposed to average 800 centistokes at 25°C. A...
2.17. The viscosity of a liquid detergent is supposed to average 800 centistokes at 25°C. A random sample of 16 batches of detergent is collected, and the average viscosity is 812. Suppose we know that the standard deviation of viscosity is σ 25 centistokes. (a) State the hypotheses that should be tested. (b) Test these hypotheses using a-0.05. What are your conclusions? (c) What is the P-value for the test? (d) Find a 95 percent confidence interval on the mean.
2. 22 random samples were selected from a population that has a normal distribution. The sample...
2. 22 random samples were selected from a population that has a normal distribution. The sample (1 point) has a mean of 99 and a standard deviation of 5 . Construct a 95% confidence interval for the population standard deviation 76 < σ < 141 3.What are the critical values 2? and 2 that correspond to a 99% confidence level and a (lpom) sample size of 30? 13.121, 52.336 13.787, 53.672 14.257, 49.588 19.768, 39.087
A manufacturer of detergent claims that the contents of boxes sold weigh on average at least...
A manufacturer of detergent claims that the contents of boxes sold weigh on average at least 30 ounces. The distribution of weights is known to be normal with standard deviation 0.7. A random sample of 25 boxes yielded an average weight of 29.7 ounces. Suppose an inspector wants to test the null hypothesis that the population mean weight is at least 30 ounces. That is, test the null hypothesis Họ : 4 = 30 against the alternative hypothesis He: u...
please answer the following problems numerically
2. Does an average box of cereal more than 368 grams of cereal? A random sample of 49 boxes showed sample mean = 360. The company has specified Ito be 15 grams and the distribution to be normal. Test at the IM00.05 level. 3. Does an average box of cereal less than 378 grams of cereal? A random sample of 64 boxes showed sample mean = 372. The company has specified sample standard deviationſ|to...
6 points 1. Does an average pack of banana bread cookies weighs 40 grams? A random sample of 35 boxes showed a mean of 41.75 grams. The company has specified the population standard deviation to be 5 grams. Test at the 0.05 level of significance. *
. Suppose a random sample of 25 is taken from a population that follows a normal distribution with unknown mean and a known variance of 144. Provide the null and alternative hypotheses necessary to determine if there is evidence that the mean of the population is greater than 100. Using the sample mean, Y, as the test statistic and a rejection region > k}, find the value of k so that α = 0.15. of the form - Using the...
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...
2.17. The viscosity of a liquid detergent is supposed to average 800 centistokes at 25°C. A random sample of 16 batches of detergent is collected, and the average viscosity is 812. Suppose we know that the standard deviation of viscosity is σ 25 centistokes. (a) State the hypotheses that should be tested. (b) Test these hypotheses using a-0.05. What are your conclusions? (c) What is the P-value for the test? (d) Find a 95 percent confidence interval on the mean.
2. 22 random samples were selected from a population that has a normal distribution. The sample (1 point) has a mean of 99 and a standard deviation of 5 . Construct a 95% confidence interval for the population standard deviation 76 < σ < 141 3.What are the critical values 2? and 2 that correspond to a 99% confidence level and a (lpom) sample size of 30? 13.121, 52.336 13.787, 53.672 14.257, 49.588 19.768, 39.087
A manufacturer of detergent claims that the contents of boxes sold weigh on average at least 30 ounces. The distribution of weights is known to be normal with standard deviation 0.7. A random sample of 25 boxes yielded an average weight of 29.7 ounces. Suppose an inspector wants to test the null hypothesis that the population mean weight is at least 30 ounces. That is, test the null hypothesis Họ : 4 = 30 against the alternative hypothesis He: u...
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