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Author Question: To compare the effectiveness of two kinds of bumper guards, two independent random samples of six ... (Read 55 times)

Ale

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on: Feb 26, 2023
To compare the effectiveness of two kinds of bumper guards, two independent random samples of six compact cars were outfitted with one of the two guards (6 cars with type 1 and 6 cars with type 2). Then, each car was run into a concrete wall at 5 mph. The average damage estimate for guard 1 was $1440. We know that the population variance of damage using bumper type 1 is 3632. The guard 2 sample had an average damage estimate of $1490. We know that the population variance of damage using bumper type 2 is 2020. Assuming both populations are normally distributed, construct a 90% confidence interval on the difference in mean repair cost.

◦

(–100.49, 0.49)


◦

(–89.33, –10.67)


◦

(–110.16, 10.16)


◦

(–129.06, 29.06)

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Marked as best answer by Ale on Feb 26, 2023

ladan86

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Reply #1 on: Feb 26, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Ale

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Reply 2 on: Feb 26, 2023
Wow, this really help

debra928

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Reply 3 on: Yesterday
Excellent

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