-Cincle the letnser of the most approate sonse, wheve appopriane 1. If X has an

Question

-Cincle the letnser of the most approate sonse, wheve appopriane 1. If X has an pts) F distribution with ar-s.4, what is the value of e where Pox 2. A survey of 114 chicken mean of o 54 liters for the women. The variance of the chicken soup consumption for the men and 126 women produced the result that the mean amount of soup consumed by the men in a month's time was 0.67 liters, compared with a men was 25% difference greater than that for the women. A 95% confidence interval for the between the means (men's mean- women's) was found to be-0.07 to-0.33 fers. At the 0.05 level, is the difference in mean chicken soup consumption between sexes statistically significant? (A). no (B) yes (C). Can't tell from the data given 3. Suppose the critical region for a certain test of hypothesis is of the form F>9.48773 and (F refers to an F statistic.) Then: the computed value of F from the data is 0.86. (A). Ho should be rejected. (B). Hi is two-tailed. C. The significance level is given by the area to the right of 9.48773 under the appropriate (D). None of the above. F distribution 4. Suppose Ho: u - and your P-value satisfies 0.01P0.05 Which of the following conclusions can be drawn? (A). Fail to Reject Ho because p is small. (B). Reject Ho because p is small. (C). Fail to Reject Ho because p is large. (D). Reject Ho because p is large. (E). Fail to Reject Ho at ? 0.01. A carefully designed experiment has just been concluded. Execution of the experiment was flawless. Unfortunately use of ? treatments. What useful information can you supply future investigators when you rep 5. 0.05 indicated no significant differences among on this experiment? Indicate agree ment with YES or disagreement with NO for each of the following items (A). No useful information. These are negative results and there is nothing useful to ren (B). The estimated variance (and its df) can be useful to future investigators (C). A careful description of experimental conditions and treatments may be useful as indication of circumstances where responses are about the same. (D). Significant differences can be reported by changing the Type l error rate from 0 0.10, 0.20 or whatever is needed to declare significance.

Explanation / Answer

solution9:

use t test when sample size is small

n<30

population standard deviation is not known.

OPTION A

1 ONLY

Solution10:

expeced freq=row tot*col tot/grand tot

=400*100/1000

=40

E=40

option A

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