Assume that the claim of the manufacturers of alloy B is true, that is, . Find approximate distributions for and in terms of using the central limit theorem. (b) Under the same assumption , find an approximate distribution of the difference in the sample means, . Use the fact that the measurements for the 30 specimens of alloy A are independent of those for the 30 specimens of alloy B. (c) Find the probability that the difference in sample means is 4 or greater under the assumption that . (d) Based on the probability found in (c), do you think these data strongly support that alloy A is superior than alloy B

drop out of school or go to quizlet, quizlet is better

step-by-step explanation:

3

step-by-step explanation:

show da graph

step-by-step explanation:

0 and 5 minutes

step-by-step explanation:

given that one morning eight buses arrive late by the number of minutes given below:

0 8 2 6 9 2 0 7 8

write these in ascending order

0   0 2 6 7 8 8 9

in the afternoon two more buses arrive at the bus stop say by x and y minutes late.

total number of buses = 10

median = average of 4th and 5th after arranging in ascending order

since 4th entry is 6, the values of x and y should be below 6

also given 0 is the mode so either x or y or both should be 0 because then only 0 gets the maximum frequency and hence mode

thus we have

0 0 0 2 6 7 8 8 9 and another unknown entry which is below 6.

since median is 3.5, we have the unknown entry to be 5 only because then only median =( 2+5)/2

thus the after noon buses were late by 0 and 5 minutes.