its normal distribution problem
please answer the following problems numerically 2. Does an average box of cereal more than 368...
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
A random sample of 25 boxes of laundry detergent from a Normal population distribution showed that the sample mean is 372.5 grams. Does an average box of laundry detergent contain 368 grams detergent? The company has specified σ =15 grams. Find the p- Value. Where a-0.05.
A machine fills boxes of cereal in a factory. The average weight of cereal in a random sample of 17 boxes is calculated to be 350 grams and the sample standard deviation is calculated to be 8 grams. Weights of cereal per box are known to follow a normal distribution. We calculate a 90% confidence interval for the true mean weight of cereal per box. The margin of error for the appropriate confidence interval is:
26. A machine fills boxes of cereal in a factory. The average weight of cereal in a randonm sample of 17 boxes is calculated to be 1350 grams and the sample standard deviation is calculated to be 8 grams. Weights of cereal per box are known to follow a normal distribution. We calculate a 95% donfidence interval for the true mean weight ot cereal per box. The margin of error for the appropriate confidence interval i (A) 3.19 (B) 3.38...
A cereal company states that the mean weight of a box of a certain cereal is 14 ounces. A consumer claims that the mean weight of cereal in its box is actually less than 14 oz. Test the consumer claim, if a sample of 50 such cereal boxes has mean 13.6 oz and SD 1.1 oz. Explain what your conclusion
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. *
6 points 1. Does an average pack of banana bread cookies weighs 40 grams? A random sample of 35 boxes showed a mean of 41.95 grams. The company has specified the population standard deviation to be 5 grams. Test at the 0.10 level of significance.* Your answer 8 points 2. An Insurance Company reports that the mean cost to process claim is $50. An industry comparison showed this amount to be larger than most other insurance companies, so they instituted...
The box fill weight of Frosted Flakes breakfast cereal follows the normal probability distribution with a mean of 12.75 ounces and a standard deviation of 1.27 ounces. A sample of 25 boxes filled this morning showed a mean of 13.85 ounces. Can we conclude that the mean weight is more than 12.75 ounces per box?
.1. Does an average pack of banana bread cookies weighs 40 grams? A random sample of 35 boxes showed a mean of 41.95 grams. The company has specified the population standard deviation to be 5 grams. Test at the 0.10 level of significance.2. An Insurance Company reports that the mean cost to process claim is $50. An industry comparison showed this amount to be larger than most other insurance companies, so they instituted cost-cutting measures. To evaluate the effect of...
A cereal company claims that mean weight of cereal boxes is at most 16.1 ounces. Suppose that a plant manager wishes to test whether the true mean weight of cereal boxes is greater than 16.1 ounces. Suppose that for this problem the population standard deviation is 0.4 and the population distribution is normal. The manager obtain a random sample of size 25 and finds a mean of 16.3 ounces. Using p value approach test the claim of company at significance...