Suppose the weights, in pounds, of the dogs in a city are normally distributed. if the population standard deviation is 3 pounds, what minimum sample size is needed to be 95% confident that the sample mean is within 1 pound of the true population mean?

35

Step-by-step explanation:

Given : Standard deviation :

Margin of error :

Significance level :

Critical value :

The formula we use to find the minimum sample size required :-

i.e.

Hence, the minimum sample size is needed to be 95% confident that the sample mean is within 1 pound of the true population mean =35

i think is 3 and 6. this took me 10 min to think.hope to and hope that my answer is brainliest.(follow me )

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50