suppose the mean of a normally distributed population is 300, and 200 simple random samples are drawn from…

suppose the mean of a normally distributed population is 300, and 200 simple random samples are drawn from the population. at a 68% confidence level, (one standard deviation from the mean), about how many of the samples confidence intervals would you expect to contain the population mean?\n64\n96\n136\n204

suppose the mean of a normally distributed population is 300, and 200 simple random samples are drawn from the population. at a 68% confidence level, (one standard deviation from the mean), about how many of the samples confidence intervals would you expect to contain the population mean?\n64\n96\n136\n204

Answer

Explanation:

Step1: Recall confidence - level concept

The 68% confidence level means that about 68% of the confidence intervals will contain the population mean.

Step2: Calculate the number of samples

We have 200 samples. To find the number of samples whose confidence intervals contain the population mean, we multiply the total number of samples by the confidence - level proportion. So, the number of samples is $200\times0.68$. $200\times0.68 = 136$

Answer:

C. 136