what is the z score of 62% of a sample proportion of 100 adults?
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A 2020 Pew Research poll found that 65% of U.S. adults believe that President Donald Trump was too slow to make major steps to stop the spread of the coronavirus. Let's assume that 0.65 is the population proportion. Suppose random samples of 100 U.S. adults are randomly selected, and the proportion of each sample is found. Suppose you find a sample of 100 adults in which 62% believe that President Donald Trump was too slow to make major steps to...
What proportion of a normal distribution is located between each of the following Z-score boundaries? a. z= -0.50 and z= +0.50 b. z=-0.90 and z= +0.90 c. z=-1.50 and z= 1.50 For a normal distribution with a mean of μ = 80 and a standard deviation of σ= 20, find the proportion of the population corresponding to each of the following. a. Scores greater than 85. b. Scores less than 100. c. Scores between 70 and 90. IQ test scores are standardized to produce a normal distribution with...
7. For a Z score of zero, what is the proportion of area beyond the positive Z score? Illustrate it in a curve. (0.5 Points)
A population proportion is 0.3. A sample of size 100 will be taken and the sample proportion will be used to estimate the population proportion. Use z-table. Round your answers to four decimal places. a. What is the probability that the sample proportion will be within ±0.03 of the population proportion? b. What is the probability that the sample proportion will be within ±0.05 of the population proportion?
11. A sample of 175 U.S. adults is composed of 100 women and 75 men. What is the estimate of the true proportion of males in the population with 99% confidence? Show work.
A random sample of 225 adults was given an IQ test. It was found that 130 of them scored higher than 100. Based on this, compute a 95% confidence interval for the proportion of all adults whose IQ score is greater than 100. Then complete the table below.
The population proportion is .50 . What is the probability that a sample proportion will be within +/- .04 of the population proportion for each of the following sample sizes? Round your answers to 4 decimal places. Use z-table. a. n= 100 b .n= 200 c. n= 500 d. n= 1000
The population proportion is 0.45. What is the probability that a sample proportion will be within +0.04 of the population proportion for each of the following sample sizes? Round your answers to 4 decimal places. Use z table. a. 100 b.n-200 C. 500 d.n=1,000 e. What is the advantage of a larger sample size? with a larger sample, there is a - Select your answer - probability will be within +0.04 of the population proportion p.
The population proportion is 0.65. What is the probability that a sample proportion will be within £0.01 of the population proportion for each of the following sample sizes? Round your answers to 4 decimal places. Use z-table. a. n = 100 b. n = 200 c. n = 500 d.n= 1,000 e. What is the advantage of a larger sample size? With a larger sample, there is a higher probability will be within £0.01 of the population proportion p.
The population proportion is 0.50. What is the probability that a sample proportion will be within +/- .01 of the population proportion for each of the following sample sizes? Round your answers to 4 decimal places. Use z-table. a. n=100 b. n=200 c.n=500 d.n=1000