Answer Happy

23) Use the given information to find the P-value. Also, state the conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null hypothesis). With H1 : p>0.554, the test statistic is z = 1.34. A) 0.0901; fail to reject the null hypothesis B) 0.0901; reject the null hypothesis C) 0.1802; reject the null hypothesis D) 0.9099; fail to reject the null hypothesis 24) Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correct symbol (1, p. o) for the indicated parameter. An entomologist writes an article in a scientific journal which claims that fewer than 16 in ten thousand male fireflies are unable to produce light due to a genetic mutation. Use the parameter p. the true proportion of fireflies unable to produce light. A) H0 p +0.0016 H1: p≥ 0.0016 C) H0: p=0.0016 B) H0: p=0.0016 Hl:p<0.0016 D) H0:p>0.0016 H1 :p ≤0.0016 Hl:p> 0.0016 25) Use the given degree of confidence and sample data to construct a confidence interval for the population mean µ. Assume that the population has a normal distribution. A laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with s-17.6 milligrams. Construct a 95% confidence interval for the true mean cholesterol content of all such eggs. B) 173.7 mg << 196.3 mg D) 173.8 mg<u<194.1 mg A) 173.5 mg<μ< 196.2 mg C) 173.8 mg << 196.2 mg
18) Of 380 randomly selected medical students, 21 said that the rural community. Find a 95% confidence interval for the true proportion of all medical students who plan to work in a rural community. A) 0.0323 p<0.0745 C) 0.0280 p<0.0826 B) 0.0323<p<0.0782 D) 0.0251<p<0.0782 19) Assume that the red blood cell counts of women are normally distributed with a cells of 4.577 million cells per microliter and a standard deviation of 0.382 million cells per microliter. Approximately what percentage of women have red blood cell counts in the normal range from 4.2 to 5.4 million cells per microliter? A) 17.69% D) 4.09 % B) 82.23% C) 16.11% 20) Use the given data to find the equation of the regression line. Round the final values to three significant digits, if necessary. 6 8 20 28 36 y 24 13 20 30 A) y -2.79 +0.897x B)y= -3.79 | 0.897× C)y=-3.79 +0.801x D) y 0.897 +-3.79x 21) Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correct symbol (u. p. a) for the indicated parameter. The manufacturer of a refrigerator system for beer kegs produces refrigerators that are supposed to maintain a true mean temperature, u, of 48° F, ideal for a certain type of German pilsner. The owner of the brewery does not agree with the refrigerator manufacturer, and claims he can prove that the true mean temperature is incorrect. A) HO ;μ 48° 48° HI: B) HO: 48° H1 :μ 480 C) H0 μ-48° HI: μ< 48° D) HO: ≤48° H1:μ> 48° 22) At the track, a gambler bets on the wrong horse in a 10-horse field nine times in a row. Later, when talking to a friend, he said he was confident that he would pick the winner the next time, because he was "due to pick a winner." Comment on his reasoning. A) This is false reasoning because there is no "law of averages" for independent events. B) When there are 10 horses in a race and he has chosen the wrong horse nine times in a row, he statistically should pick a winner the next time. C) If he doesn't pick the winning horse next time, he will shortly after that. D) This is false reasoning because he doesn't appear to be lucky. E) None of the above apply.