Question 6 A “common sense” test is specified so that scores are normally distributed with a...
Question 6
A “common sense” test is specified so that scores are normally distributed with a mean of 100 and a standard deviation of 10 over the entire population. A firm wishes to use the outcomes of this test to recruit potential employees. If the firm will only recruit individuals in the top 2.5%, what scores will the firm use to decide whether an individual is recruited?
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Question 6
A “common sense” test is specified so that scores are normally
distributed with a...
Question 6 A “common sense” test is specified so that scores are normally distributed with a...
Question 6 A “common sense” test is specified so that scores are normally distributed with a mean of 100 and a standard deviation of 10 over the entire population. A firm wishes to use the outcomes of this test to recruit potential employees. If the firm will only recruit individuals in the top 2.5%, what scores will the firm use to decide whether an individual is recruited? [5 marks]
The Law School Admission Test (LSAT) is designed so that test scores are normally distributed. The...
The Law School Admission Test (LSAT) is designed so that test scores are normally distributed. The mean LSAT score for the population of all test-takers in 2005 was 154.35, with a standard deviation of 5.62. Calculate the value of the standard error of the mean for the sampling distribution for 100 samples.
The frequency distribution shows the results of 200 test scores. Are the test scores normally distributed?...
The frequency distribution shows the results of 200 test scores. Are the test scores normally distributed? Use a =0.01. Complete parts (a) through (e). Class boundaries 49.5-58.5 58.5-67.5 Frequency, f 19 62 D 67.5-76.5 81 76.5-85.5 33 85.5-94.5 5 Using a chi-square goodness-of-fit test, you can decide, with some degree of certainty, whether a variable is normally distributed. In all chi-square tests for normality, the null and alternative hypotheses are as follows. Ho: The test scores have a normal distribution....
Intelligence quotas on two different tests are normally distributed. Test A has a mean of 100...
Intelligence quotas on two different tests are normally distributed. Test A has a mean of 100 and a standard deviation of 18. Test B has a mean of 100 and a standard deviation of 16. Use z-scores to determine which person has the higher IQ: an individual who scores 133 on Test A or an individual who scores 120 on Test B. Which individual has the higher IQ? A. The individual who scores 120 on Test B. B. The individual...
The Law School Admission Test (LSAT) is designed so that test scores are normally distributed. The...
The Law School Admission Test (LSAT) is designed so that test scores are normally distributed. The mean LSAT score for the population of all test-takers in 2005 was 154.35, with a standard deviation of 5.62. If you drew all possible random samples of size 100 from the population of LSAT test-takers and plotted the values of the mean from each sample, the resulting distribution would be the sampling distribution of the mean. Based on Centeral Limit Theorium, What is the...
Scores on a certain test are normally distributed with a variance of 84. A researcher wishes...
Scores on a certain test are normally distributed with a variance of 84. A researcher wishes to estimate the mean score achieved by all adults on the test. Find the sample size needed to assure with 95 percent confidence that the sample mean will not differ from the population mean by more than 5 units.
suppose that the scores on a reading a Bility test are normally distributed with a mean...
suppose that the scores on a reading a Bility test are normally distributed with a mean of 60 and a standard deviation of nine. What proportion of individuals scored at least 75 points on this test? Round your answer to at least four decimal places
Suppose that the scores on a reading ability test are normally distributed with a mean of...
Suppose that the scores on a reading ability test are normally distributed with a mean of 65 and a standard deviation of 10 . What proportion of individuals score at least 55 points on this test? Round your answer to at least four decimal places.
Suppose scores of a standardized test are normally distributed and have a known population standard deviation...
Suppose scores of a standardized test are normally distributed and have a known population standard deviation of 8 points and an unknown population mean. A random sample of 25 scores is taken and gives a sample mean of 93 points. Find the margin of error for a confidence interval for the population mean with a 98% confidence level. z0.10 z0.05 z0.025 z0.01 z0.005 1.282 1.645 1.960 2.326 2.576 You may use a calculator or the common z values above. Round...
The frequency distribution shows the results of 200 test scores. Are the test scores normally distributed?...
The frequency distribution shows the results of 200 test scores.
Are the test scores normally distributed?
PART B. Determine the critical
value and the rejected region
PART C. Calculate the test statistic
PART D. Decide whether to reject or fail to reject the
null hypothesis
The frequency distribution shows the results of 200 test scores. Are the test scores normally distributed? Use α= 0.01. Complete parts (a) through (d) Class boundaries Frequency, f 49.5-58.5 20 58.5-67.5 62 67.5-76.5 79 76.5-85.5...
The frequency distribution shows the results of 200 test scores. Are the test scores normally distributed? Use a =0.01. Complete parts (a) through (e). Class boundaries 49.5-58.5 58.5-67.5 Frequency, f 19 62 D 67.5-76.5 81 76.5-85.5 33 85.5-94.5 5 Using a chi-square goodness-of-fit test, you can decide, with some degree of certainty, whether a variable is normally distributed. In all chi-square tests for normality, the null and alternative hypotheses are as follows. Ho: The test scores have a normal distribution....
The frequency distribution shows the results of 200 test scores.
Are the test scores normally distributed?
PART B. Determine the critical
value and the rejected region
PART C. Calculate the test statistic
PART D. Decide whether to reject or fail to reject the
null hypothesis
The frequency distribution shows the results of 200 test scores. Are the test scores normally distributed? Use α= 0.01. Complete parts (a) through (d) Class boundaries Frequency, f 49.5-58.5 20 58.5-67.5 62 67.5-76.5 79 76.5-85.5...
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