Arandom sample of 25 employees of a local company has been taken. a 95% confidence interval estimate for the mean systolic blood pressure for all employees of the company is 123 to 139. which of the following statements is valid?

(a) 95% of the sample of employees has a systolic blood pressure between 123 and 139.
(b) if the sampling procedure were repeated many times, 95% of the resulting confidence intervals would contain the population mean systolic blood pressure.
(c) if the sampling procedure were repeated many times, 95% of the sample means would be between 123 and 139.
(d) 95% of the population of employees has a systolic blood pressure between 123 and 139.

(B) If the sampling procedure were repeated many times, 95% of the resulting confidence intervals would contain the population mean systolic blood pressure.

Step-by-step explanation:

A confidence interval of 95% means that there is a 95% certainty that for a given sample, the population mean will be within the confidence interval estimated.

This is the same as saying that if he sampling procedure were repeated many times, 95% of the time the population mean would be contained in the resulting confidence interval.

Therefore, the answer is B)

we know that

applying the law of sines

°

so

∠j=18°

∠k=29°

∠l=180-(18+29)=133°

the answer part a) is

the measure of angle k is  ≈29°

part b)  the measure of angle k could also be

(180-29)=151°

so

∠j=18°

∠k=151°

∠l=180-(18+151)=11°

the answer part b) is

the measure of angle k could also be 151°

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it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.