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Estimate 2/3% of $141

Answers

Answer 1

Answer:

Answer:

0.94 cents

Step-by-step explanation:

If you multiply 0.67 with 141 you will see that you will end up with the same answer as above.

0.666 estimates to 0.67

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In a systematic review with a meta-analysis, researchers combine the results of each of the individual studies to create a larger sample size (and therefore greater power), then re-run the statistics to capture the true magnitude of the effect. The single-effect measure calculated and reported when the results from all the studies are combined is called what:______

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The single-effect measure calculated and reported is called: Summary statistic

The summary statistic is use to derive a more centralized result ( measure of central tendency ) of a group of data contained in a data set. given that all the results of each individual studies are collected to create a larger sample.

The single-effect measure that will be calculated and reported when this larger sample size is re run to capture the true magnitude is termed the summary statistic of the individual studies.

Hence we can conclude that the single-effect measure calculated and reported is called summary statistic

Learn more : brainly.com/question/10942567

Answer: Power Analysis

Step-by-step explanation:

What is the best estimate of the sum of the fractions?

Answers

Answer:

Step-by-step explanation:

A professor at a university wants to estimate the average number of hours of sleep the students get during exam week. The professor wants to find a sample mean that is within 4.266 hours of the true average for all college students at the university with 99% conconfidence. If the professor knows the standard deviation of the sleep times for all college students is 2.539, what sample size will need to be taken

Answers

Answer:

The sample size is $n = 2$

Step-by-step explanation:

From the question we are told that

The margin of error is E =4.266

The standard deviation is $\sigma = 2.539$

From the question we are told the confidence level is 99% , hence the level of significance is

$\alpha = (100 - 99 ) \%$

=> $\alpha = 0.01$

Generally from the normal distribution table the critical value of $(\alpha )/(2)$ is

$Z_{(\alpha )/(2) } = 2.58$

Generally the sample size is mathematically represented as

$n = [\frac{Z_{(\alpha )/(2) } * \sigma }{E} ] ^2$

=> $n = [(2.58 * 2.539 )/(4.266) ] ^2$

=> $n = 2$

The numbers of words defined on randomly selected pages from a dictionary are shown below. Find the mean, median, mode of the listed numbers. 30 31 64 59 57 33 54 77 56 41 What is the mean? Select the correct choice below and ,if necessary ,fill in the answer box within your choice.(around to one decimal place as needed)