Mathematics
Mathematics, 27.04.2021 14:50, boo3972

The standard recommendation for automobile oil changes is once every 3000 miles. A local mechanic is interested in determining whether people who drive more expensive cars are more likely to follow the recommendation. Independent random samples of 49 customers who drive luxury cars and 38 customers who drive compact lower-price cars were selected. The average distance driven between oil changes was 3178 miles for the luxury car owners and 3200 miles for the compact lower-price cars. The sample standard deviations were 41.80 and 50.60 miles for the luxury and compact groups, respectively. Assume that the population distributions of the distances between oil changes have the same standard deviation for the two populations. Using the 1% significance level, can you conclude that the mean distance between oil changes is less for all luxury cars than that for all compact lower-price cars

answer
Answers: 3

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 14:30, mathsuxdix
All per-unit concepts rely on ratios, meaning, to provide a type of measurement
Answers: 3
image
Mathematics, 21.06.2019 15:30, robclark128
Which statement about the graph of y = 8(0.25)^2
Answers: 2
image
Mathematics, 21.06.2019 15:50, jetblackcap
If n stands for number sold and c stands for cost per item, in which column would you use the formula: ? a. column d c. column f b. column e d. column g
Answers: 1
image
Mathematics, 21.06.2019 20:30, jthollis1348
Which expression is equivalent to (4 +6i)^2? ? -20 + 48i 8 + 12i 16 - 36i 20 + 48i
Answers: 1
Do you know the correct answer?
The standard recommendation for automobile oil changes is once every 3000 miles. A local mechanic is...

Questions in other subjects:

Konu
English, 01.12.2021 01:20
Konu
Mathematics, 01.12.2021 01:20