# Question: Refer to Applied Example 9 14 a State the Polish statisticians

Refer to Applied Example 9.14.

a. State the Polish statisticians’ hypothesis.

b. Is their hypothesis the null or alternative hypothesis? Explain.

c. State the null hypothesis. State the alternative hypothesis.

d. Explain the meaning of, “6.2 percent on either side of 50 percent.”

e. What statistical term does the phrase, “would be expected in only about 7 of every 100 experiments with a fair coin” represent? Express it using symbols.

f. If the null hypothesis is tested using a = 0.05 what decision and conclusion is reached using the results obtained by the students?

g. When New Scientist carried out its own experiment, what value did it obtain for the observed probability of heads?

h. Does New Scientist have evidence that the coin is biased? Explain.

i. Should we be upset by the fact that the results obtained by Gliszczynski’s students and the New Scientist results are quite different but lead to the same conclusion? Explain.

a. State the Polish statisticians’ hypothesis.

b. Is their hypothesis the null or alternative hypothesis? Explain.

c. State the null hypothesis. State the alternative hypothesis.

d. Explain the meaning of, “6.2 percent on either side of 50 percent.”

e. What statistical term does the phrase, “would be expected in only about 7 of every 100 experiments with a fair coin” represent? Express it using symbols.

f. If the null hypothesis is tested using a = 0.05 what decision and conclusion is reached using the results obtained by the students?

g. When New Scientist carried out its own experiment, what value did it obtain for the observed probability of heads?

h. Does New Scientist have evidence that the coin is biased? Explain.

i. Should we be upset by the fact that the results obtained by Gliszczynski’s students and the New Scientist results are quite different but lead to the same conclusion? Explain.

**View Solution:**## Answer to relevant Questions

a. Calculate the standard deviation for each set. b. What effect did the largest value changing from 10 to 15 have on the standard deviation? c. Why do you think 15 might be called an outlier? Using the notation of Exercise9.120, name and find the critical values of x2. State the null hypothesis, Ho, and the alternative hypothesis, Ha, that would be used to test these claims: a. The variance has decreased from 34.5. b. The standard deviation of shoe size is more than 0.32. c. The ...Variation in the life of a battery is expected, but too much variation would be of concern to the consumer, who would never know if the purchased battery might have a very short life. A random sample of 30 AA batteries of a ...Refer to Applied Example 9.20, “Ceramic Floor Tile,” and Exercise 9.145 to continue the investigation of the floor tile manufacturing process. a. What are the assumptions for a chi-square test of standard deviation? Do ...Post your question