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# mean amount spent by a family of four on food per month is \$500 with a standard

mean amount spent by a family of four on food per month is \$500 with a standard deviation of 575. Assume that the food costs are normally distributed. 6. Referri Referring to Problem C, what is the probability that a family spends less than \$410 per month? a02158 b. 0.8849 c. 00362 d 0.1151 Referring to Problem C, there is a 10% probability that a family spends more than how much per month? a approximately 1.00 b. \$596 C. 1.29 d \$400 PROBLEMD Of 369 randomly selected medical students, 23 said that they planned to work in a rural community. & Referring to Problem D, construct a 95% confidence interval for the proportion of all medical students who plan to work in a rural corrimunity. (3.749,9,479) (3.30%, 9.1796) c. (3.74%, 8.70%) Referring to Problem D, interpret your confidence interval. a. There is 95% confidence that the proportion of all medical students who plan to work in a rural community falls within the confidence interval bounds. b. 95% of all medical students plan to work in a rural community. There is 95% confidence that 6.2% of all medical students plan to work in a rural community. d 95% of the time, medical students plan to work in a rural community. Referring to Problem D. the point estimate of the population proportion is 0.0623 a True b. False 10. 11. A multiple-choice test has 30 questions. There are 4 choices for each question. A student who has not studied for the test decides to answer all questions randomly. What type of probability distribution can be used to figure out his chance of getting at least 20 questions right? a. Binomial distribution b. Normal distribution c. Standardized normal distribution d. None of the above 12. Two normal distributions are compared. One has a mean of 10 and a standard deviation of To The second normal distribution has a mean of 10 and a standard deviation of 2. Which of the following is true a. the locations of the distributions are different b. the distributions are from two different families c. the dispersions of the distributions are different d. the dispersions of the distributions are the same. The locations of the mean of 10 and ate has a mean of 10 lons are from ons are diff wird deviation Wiederbedrer

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