Answer key 421 422 question 17 of 20 10 10 points

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Answer Key: 4.21| 4.22
Question 17 of 20 1.0/ 1.0 Points Accepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. A medical doctor wishes to test the claim that the standard deviation of the systolic blood pressure of deep sea divers is greater than 450. To do so, she selected a random sample of 25 divers and found s = 468. Assuming that the systolic blood pressures of deep sea divers are normally distributed, if the doctor wanted to test her research hypothesis at the .01 level of significance, what is the critical value? Place your answer, rounded to 3 decimal places, in the blank. For example, 34.567 would be a legitimate entry. 42.980
Part 3 of 3 - 3.0/ 3.0 Points
Question 18 of 20 1.0/ 1.0 Points A one-tailed alternative is one that is supported by evidence in either direction.
Question 19 of 20 1.0/ 1.0 Points If a null hypothesis about a population proportion p is rejected at the 0.025 level of significance, then it must also be rejected it at the 0.05 level.
Question 20 of 20 1.0/ 1.0 Points
The smaller the p–value, the more evidence there is in favor of the alternative hypothesis. True False
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