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A researcher assigns 21 adolescents to rate the likability of a person described in a vignette as having one of three personality traits. An equal number of participants are assigned to each group. If Fobt= 4.08 for this study, then what was the decision at a 0.05 level of significance for a one-way between-subjects ANOVA?
Is there enough information to reject or retain the null?
Suppose (as is roughly true) that 88% of college students were employed last summer. A samply survey interviews SRS of 400 college students at OSU. In the SRS, 324 college students were found to be employed last summer.
translate the statement into a confidence interval for p. approximate the level of confidence.in a survey of 1000 u.s.
ph in the water is 7 at the .05 significance level. Her alternative hypothesis is that the water does not have a pH of 7. For which p-value will she fail to reject the null hypothesis?
Describe what type of data analysis would use linear correlation coefficients and line of best fits. Describe the benefits of comparing to a line of best fit
Make a relative frequency histogram by using ten-point intervals to show the distribution of the scores.
It is estimated that 10 percent of those taking the quantitative methods portion of the CPA examination fail that section. Sixty students are taking the exam on Saturday.
In a sample of 200 women, 144 of them said they were in debt. Test the claim that women are in deeper debt than men, at a=0.01.
question suppose you are testing h0 p .29 versus ha p ne .29. a random sample of 740 items shows that 207 have this
Using the scatter diagram (no calculations), would you estimate the linear correlation coefficient to be positive, close to zero, or negative?
in 1987 there were 342970 cell phone subscribers in the united states. by 2008 the number of cell phone subscribers
Would the correlation be greater, smaller, or about the same if you calculated the correlation between the weights of individual men and their heights (rounded to the nearest inch)? Explain your answer?
1. (a) Suppose we construct a 99% con?dence interval. What are we 99% con?dent about? (b) Which of the con?dence intervals is wider, 90% or 99%? (c) In computing a con?dence interval, when do you use the t-distribution and when do you use z, with nor..
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