(A) Usually, p-values LESS THAN 0.05 means that our studies are significant. (B) However, Shapiro-Wilk results must be GREATER THAN 0.05 to confirm normality. O Both statements are true. O Only the first statement (A) is true. O Only the second statement (B) is true. O None of the statements are true.
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- The conditional probability of E given that F occurs is P(EF)=___________. So in rolling a die the conditional probability of the event E, getting a six, given that the event F, getting an even number, has occurred is P(EF)=___________.A local police chlef claims that more than 29 % of all drug related arrests are never prosecuted. A sample of 600 arrests shows that 32 % of the arrests were never prosecuted. Is there sufficient evidence at the 0.02 level to substantiate the chief's claim? State the null and alternative hypotheses for the above scenario.A new insecticide is advertised to kill more than 95% roaches upon contact. In a laboratory test, the insecticide was applied to 400 roaches and 384 died immediately after contact. Is this sufficient evidence to support the advertised claim? Use α{=0.05. (d) Conclusion for the problem above is
- The worldwide market share for a web browser was 20.1% in a recent month. Suppose that a sample of 200 random students at a certain university finds that 50 use the browser. At the 0.01 level of significance, is there evidence that the market share for the web browser at the university is greater than the worldwide market share of 20.1%? Determine the null and alternative hypotheses. A.H0: P≥0.201; H1: P<0.201 B.H0: P=0.201; H1: P≠0.201 C. H0: P≠0.201; H1: P=0.201 D. H0: P≤0.201; H1: P>0.201 ZStat=__ (Round to two decimal places) p-value=____ __A__ the null hypothesis. There is __B__ evidence to conclude that the market share at teh university is __C__ the worldwide market share of 20.1%. A: Reject or do not reject B: insufficient or sufficient C: at least, less than, equal to, at most, not equal to, greater thanA local police chief claims that about 22% of all drug related arrests are ever prosecuted. A sample of 800 arrests shows that 25% of the arrests were prosecuted. Is there sufficient evidence at the 0.01 level to refute the chief's claim? State the null and alternative hypotheses for the above scenario.A new insecticide is advertised to kill more than 95% roaches upon contact. In a laboratory test, the insecticide was applied to 400 roaches and 384 died immediately after contact. Is this sufficient evidence to support the advertised claim? Use α=0.05. (a) Alternative hypothesis for the problem above is
- The proportion of defective items is not allowed to be over 12%. A buyer wants to test whether the proportion of defectives in his shipment of 1000 items exceeds the allowable limit. The buyer takes a SRS of 100 items and finds that 19 are defective. State the null and alternative hypotheses for this test. Group of answer choices Ho: p = 0.12 vs Ha: p > 0.12 Ho: p = 0.19 vs Ha: p ≠ 0.12 Ho: p = 0.12 vs Ha: p < 0.19 Ho: p = 0.12 vs Ha: p = 0.19For the following conjecture, state the null and alternative hypotheses. The average age of community college students is greater than 24.6 years. The null hypothesis is: The alternative hypothesis is:A company selling home furnaces claims that installingtheir new high efficiency furnace will “cut your heating bill in half.” A consumer agency collects data for a ran-dom sample of homes and plots this year’s heating costs with the new furnaces against previous costs with the oldfurnaces. Which are the most appropriate hypotheses totest the company’s claim?A) H0: b = 0, HA: b ≠ 0B) H0: b = 0, HA: b 7 0C) H0: b = 0, HA: b 6 0D) H0: b = 0, HA: b 6 0.5E) H0: b = 0.5, HA: b ≠ 0.5
- State the null and alternative hypotheses of the following statements (in words). 1. The claim is that brown M&Ms constitute 13% of all MAMs. Using mathematical notation, identify the claim, the null hypothesis and the alternative hypothesis. 2. The claim is that the mean body temperature of a healthy adult is 98.6°F. Using mathematical notation identify the claim, the null hypothesis and the alternative hypothesis. 3. The claim is that the majority of Americans floss the night before they go to the dentist. Using identify the claim, the null hypothesis and the alternative hypothesis. 4. A friend of yours claims to be psychic. To test his claim you take a stack of 100 playing cards and have your friend try to identify the suit (hearts, diamonds, clubs, or spades), without looking, of course! Using mathematical notation, identify the claim, the null hypothesis and the alternative hypothesis.7. A manufacturer of balloons claims that p, the proportion of its balloons that burst when inflated to a diameter of up to 12 inches, is no more than 0.05. Some customers have complained that the balloons are bursting more frequently, If the customers want to conduct an experiment to test the manufacturer’s claim, which of the following hypotheses would be appropriate? (A) H0 : p ≠ 0.05, Ha : p = 0.05 (C) H0 : p = 0.05, Ha : p ≠ 0.05 (B) H0 : p = 0.05, Ha : p > 0.05 (D) H0 : p = 0.05, Ha : p < 0.05 If you feel the answer is none of the choices given, submit no answer to the questionIf, in a sample of n=10 selected from a left-skewed population, X=63 and S=24, would you use the t test to test the null hypothesis H0: μ=61? Question content area bottom Part 1 Choose the correct answer below. A. Yes, you would use the t test because the sample size is less than 30 and this population size allows for the Central Limit Theorem to take effect. B. No, you would not use the t test because the sample size is less than 30 and the population is left-skewed. C. No, you would not use the t test because the sample size is at least 30 and the population is left-skewed. D. Yes, you would use the t test because the sample size is at least 30 and this population size allows for the Central Limit Theorem to take effect.
