The weight of trucks traveling on a particular section of i-475 have a population mean of 15.8 tons and a population standard deviation of 4.2 tons. what is the probability a state highway inspector could select a sample of 49 trucks and find the sample mean to be 14.3 tons or less

0.0062

Step-by-step explanation:

Given : The weight of trucks traveling on a particular section of I-475 have a population mean of tons and a population standard deviation of tons.

Sample size : n=49

Let x be the random variable that represents the weight of trucks .

z-score :

For x= 14.3 tons

Now, the probability a state highway inspector could select a sample of 49 trucks and find the sample mean to be 14.3 tons or less will be :-

Hence, the probability a state highway inspector could select a sample of 49 trucks and find the sample mean to be 14.3 tons or less =0.0062

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

d

step-by-step explanation: