In a packing plant, one of the machines packs jars into a box. A sales rep...

In a packing plant, one of the machines packs jars into a box. A sales rep for a packing machine manufacturer comes into the plant saying that a new machine he is selling will pack the jars faster than the old machine. To test this claim, each machine is timed for how long it takes to pack 10 cartons of jars at randomly chosen times. Given a 95% confidence interval of (-13.84, -6.68) for the true difference in average times to pack the jars (old machine - new machine), what can you conclude from this interval?

Question 3 options:

1)	We are 95% confident that the average packing time of the old machine is greater than the new machine. The sales rep appears to be correct.

2)	We are 95% confident that the average packing time of the new machine is greater than the old machine. The sales rep does not appear to be telling the truth.

3)	We are 95% confident that the difference between the two sample means falls within the interval.

4)	We do not have enough information to make a conclusion.

5)	There is no significant difference between the average packing times of the two machines. The sales rep does not appear to be telling the truth.

Expert Solution

2) We are 95% confident that the average packing time of the new machine is greater than the old machine . The sales rep does not appear to be telling the truth.

orchestra answered 1 year ago

In a packing plant, a machine packs cartons with jars. It is supposed that a new...

In a packing plant, a machine packs cartons with jars. It is supposed that a new machine will pack faster on the average than the machine currently used. To test that hypothesis, the times it takes each machine to pack 10 cartons are recorded. It is given that the mean time for the new machine is 42.14 seconds with a standard deviation of 0.683 seconds. The mean time for the old machine is 43.23 seconds with a standard deviation of...

Abraham’s Eatery uses a lunch box supplier that has a sales rep come by weekly to...

Abraham’s Eatery uses a lunch box supplier that has a sales rep come by weekly to order boxes. Abraham wants a 98% service level. Abraham’s average daily demand is 100 lunches, with a daily standard deviation of 17 lunches. The lead time for lunch box purchases is 4 days. If there are 400 lunch boxes when the rep comes by, how many boxes should be ordered? A. 830 B. 1,216 C. 793 D. 816 E. Do not have enough information...

Nash Company includes one coupon in each box of soap powder that it packs, and 10...

Nash Company includes one coupon in each box of soap powder that it packs, and 10 coupons are redeemable for a premium (a kitchen utensil). In 2020, Nash Company purchased 8,000 premiums at 75 cents each and sold 105,000 boxes of soap powder at $3.20 per box; 41,000 coupons were presented for redemption in 2020. It is estimated that 60% of the coupons will eventually be presented for redemption. Prepare all the entries that would be made relative to sales...

A company uses packing machines to prepare its products for shipping. One machine costs –$400,000 and...

A company uses packing machines to prepare its products for shipping. One machine costs –$400,000 and lasts 5 years before it needs replaced. The machine will be worthless after the 5 years. The annual after-tax cash flow per machine is –$50,000. What is the equivalent annual cost of one machine if the required rate of return is 15 percent? Negative sign used for the problem and the answers below indicates that they are costs or cash outflows. a) -567,607.75 b)-232,392.25...

SmithSmith Foods produces specialty soup sold in jars. The projected sales in dollars and jars for...

SmithSmith Foods produces specialty soup sold in jars. The projected sales in dollars and jars for each quarter of the upcoming year are as? follows: Total sales revenue Number of jars sold 1st quarter. . . . $181,000 153,000 2nd quarter. . . . $213,000 180,000 3rd quarter. . . . $257,000 212,500 4th quarter. . . . $194,000 163,500 SmithSmith anticipates selling 226 comma 000226,000 jars with total sales revenue of $ 266 comma 000$266,000 in the first quarter...

Jackson & Sons uses packing machines to prepare its products for shipping. One machine costs $397,500...

Jackson & Sons uses packing machines to prepare its products for shipping. One machine costs $397,500 and lasts 5 years before it needs replaced. The machine will be worthless after the 5 years. The annual after-tax operating cost per machine is $38,400. What is the equivalent annual cost of one machine if the required rate of return is 16 percent?

The ABC Cement Company packs 80-pound bags of concrete mix using manpower. Filling and packing a...

The ABC Cement Company packs 80-pound bags of concrete mix using manpower. Filling and packing a single bag requires a worker to undertake four elemental tasks. The time study undertaken so as to develop a standard time for the task has yielded the following observed time (in minutes). Assume the company’s tradition for this kind of job is using an allowance of 20 percent of normal time. Observed time in minutes per observation: Observed time in minutes per observation: Performance...

You want to determine whether there is a statistically different average weekly sales between Sales Rep...

You want to determine whether there is a statistically different average weekly sales between Sales Rep A and Sales Rep B. * Create Null and Alternative Hypothesis statements that would allow you to determine whether their sales performance is statistically different or not. * Use a significance level of .05 to conduct a t-test of independent samples to compare the average weekly sales of the two candidates. * Calculate the p-value? SAMPLE OF WEEKLY SALES Sales Rep # AverageWeekly Sales($)...

A fruit packing plant in Florida reports that 15% of packed oranges will spoil by the...

A fruit packing plant in Florida reports that 15% of packed oranges will spoil by the time they reach their destination. Suppose a grocery store receives a shipment of 1000 oranges from the plant. The produce manager takes a random sample of 50 oranges from the shipment to check the quality of the oranges. For each of the following questions, write down an expression for the probability you wish to find, then use your calculator to find the probability. 1....

When a truckload of apples arrives at a packing plant, a random sample of 175 is...

When a truckload of apples arrives at a packing plant, a random sample of 175 is selected and examined for bruises, discoloration, and other defects. The whole truckload will be rejected if more than 6% of the sample is unsatisfactory. Suppose that in fact 10% of the apples on the truck do not meet the desired standard. What is the probability that the shipment will be accepted anyway? P(accepted)=?? (Round to three decimal places as needed.)

Question