1) M = (1 + 1 + 1 + 2 + 1)/5 = 1.2
df = 5 - 1 = 4
s2 = ((1 - 1.2)^2 + (1 - 1.2)^2 + (1 - 1.2)^2 + (2 - 1.2)^2 + (1 - 1.2)^2)/4 = 0.2
s = =
0.447
2) M = (1 + 3 + 6 + 7 + 1 + 3)/6 = 3.5
df = 6 - 1 = 5
s2 = ((1 - 3.5)^2 + (3 - 3.5)^2 + (6 - 3.5)^2 + (7 - 3.5)^2 + (1 - 3.5)^2 + (3 - 3.5)^2)/5 = 6.3
s = =
2.71
5. Standard deviation and variance for a sample Aa Aa S The Bem Sex Role Inventory...
The Bem Sex Role Inventory (BSRI) provides independent assessments of masculinity and femininity in terms of the respondent's self-reported possession of socially desirable, stereotypically masculine and feminine personality characteristics Alison Konrad and Claudia Harris sought to compare northern U.S. and southern U.S. women on their judgments of the desirability of 40 masculine, feminine, or androgynous traits. Suppose that the following are the scores from a hypothetical sample of northern U.S. women for the attribute Sensitive 3 1 1 23 Calculate...
Aa Aa E 4. Calculating the standard deviation and the estimated standard error for the sample mean difference A researcher is interested in hamster wheel-running activity during the summer versus the winter. He suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. He records the activity of n = 25 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of...
g the standard deviation or variance Aa Aa 0.9 2.4 2.5 3.1 4.0 4.3 4.3 4.4 4.4 4.9 4.9 5.1 5.2 5.6 5.8 3.1 se sample of n 20 scores. Notice that they are listed in order from 0.9 to 5.8, but that some of the scured byThe mean, M, of these scores is 4.0. are asked for the sample standard deviation of these scores. Since you don t have all of them, you YoU ate it. Which of the...
4. Calculating the standard deviation and the estimated standard error for the sample mean difference Aa Aa A researcher is interested in hamster wheel-running activity during the summer versus the winter. He suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. He records the activity of n = 16 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of the...
Successful hotel managers must have personality characteristics often thought of as feminine (such as "compassionate") as well as those often thought of as masculine (such as "forceful"). The Bem Sex-Role Inventory (BSRI) is a personality test that gives separate ratings for female and male stereotypes, both on a scale of 1 to 7. A sample of 148 male general managers of three-star and four-star hotels had mean BSRI masculinity score x = 5.28. The mean score for the general male...
QUESTION 5 A sample of 225 elements from a population with a standard deviation of 75 is selected. The sample mean is 180. The 95% confidence interval for? is 105 to 225 175 to 185. 171.78 to 188.22. 170.2 to 189.8. QUESTION 6 "From a population that is normally distributed, a sample of 25 elements is selected and the standard deviation of the sample is computed. For the interval estimation of , the proper distribution to use is the normal...
l, this page may not function correctly. Click here to learn more. S. Calculating standard deviation and variance using the definitional formula Aa Aa Consider a data set containing the following values: 70 65 71 78 89 68 50 75 The mean of the preceding values is 70.75. The deviations from the mean have been calculated as follows: -0.75 -5.75 0.25 7.25 18.25 2.75-20.75 4.25 and the sample standard deviation is If this is sample data, the sample variance is...
Standara deviatIon anu tne esumateu stdnuaru erTur 1or the samppie Aa Aa mean difference A researcher is interested in hamster wheel-running activity during the summer versus the winter. She suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. She records the adctivity of n 16 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of the same hamsters during December,...
Suppose for a study, sample standard deviation s = 5, sample mean xbar = 25 and n = 10. Test the hypothesis that the population mean is different from 24 at 10% significance level.
Assume that you have a sample size of n1 = 16 with a mean of 42 and a standard deviation (S) equal to 9. Assume that you have another independent sample with n2 = 25, a mean of 36 and a standard deviation (S) of 4. Assume you are directed to use a significance level of α = 0.01. [DM.4] Construct the appropriate hypothesis test. Identify H0 and H1. What are the appropriate critical values? (4 Decimal Places) From what...