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1. (3 pt) A grocery store is interested in how much money. on average, their customers spend each visit in the produce department. Using their store records, they draw a sample of 1,000 visits and calculate each customer's average spending on produce. a. Identify the population, sample, parameter, statistic, variable, and data for this example. population = sample = StatiStic = variable = b. What kind of data is \"amount of money spent on produce per visit?\" a. nominal qualitative b. ordinal qualitative c. continuous quantitative d. discrete quantitative c. The study finds that the mean amount spent on produce per visit by the customers in the sample is $12.84. This is an example of a: a. population b. sample c. parameter d. statistic e. variable 2. (5 pt) For the data descriptions in the left column, choose the best terminology from the right column. (Answer . . . Here 11) Data Description Terminology 1. Baking temperatures for various main dishes: 350, 400, 325, etc. A. Ratio 2. Distance (In miles) from Manama Naval base to student homes B. Discreet 3. Top 10 US universities C. Interval 4. List of ingredients for Tom Yam Khoon (T haI spicy shrimp soup) D. Ordinal 5. The number of ads on a one-hour TV show 16. (3 pt) If 3% of calculators are defective, find the mean, variance, and standard deviation of a lot of 300 calculators. 17. (5 pt + 4 extra credit) Forty-eight percent of all Californians registered voters prefer life in prison without parole over the death penalty for a person convicted of first degree murder. Among Latino California registered voters, 55% prefer life in prison without parole over the death penalty for a person convicted of first degree murder. 37.6% of all Californians are Latino. Let - C = Californians (registered voters) preferring life in prison without parole over the death penalty for a person convicted of first degree murder. - L = Latino Californians Suppose that one Californian is randomly selected. Find __ Iii __ u-- u- F. Are L and C independent events? Explain why or why not. G. Are L and C mutually exclusive events? Explain why or why not. 18. (5 pt) Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are as follows: a. Construct a histogram of the data b. Complete the columns of the table c. Find the mean, median. mode. standard deviation, variance, first quartile. and third quartile. Number of Relative Cumulative Relative Movies Frequency Frequency __ -_ _ _ --_ 3. (8 pt) Identify the type of sampling used to collect data a. The local sporting goods store has a promotion where every 1000th customer gets a $10 gilt card. b. The first 30 riders of a bus on a particular day are asked their opinions of the bus service in San Diego. c. Nursing supervisors are selected using random numbers to determine annual salaries. d. A researcher gave random numbers to all the subjects, then divided them into groups according to their sexual orientation, and selected members proportionately from each group In using random number generator. 4. (1 pt) Which of the following can measure variability? (Select all that apply) a. mean b. median c. range d. variance e. standard deviation 7. lnterquartile range 5. (1 pt) For the scores 3. 5. a, 10, 14, 17, 21, 25, calculate the 75lh percentile. a. 6.75 b. 17 c. 21 d. 20 6. (1 pt) In the graph, there are two distrubitions and we can tell A (check all that apply): \\ a. The mean oi distribution A>the mean at distribution B b. The mean oi distribution A the std deviation of B distribution B / d. The slande deviation of distribution A: the st deviation of distribution B 7. (1 pt) Based on the frequency polygon of test scores displayed on n m m an 'n so W 7" an m m the right, . a. Nobody scored below a 55 b. Nobody scored a 0 ' c. The most common score was a 75 a d. Everyone got a perfect score In 8. (1 pt) Which oi the following is NOT TRUE about ' too the distribution ior averages? 3 so a. The mean, median, and mode are equal. 2 w b. The area under the curve is one. \"' c. The curve never touches the x-axis. '9 d. The curve is skewed to the right. 20 9. (1 pt) Suppose we want to choose 4 letters, without replacement, irom 18 distinct letters. lithe as '5 m w 75 35 '5 "s "5 '25 '3 \"5 "a '35 '75 order of the choices is taken into consideration, TBS! Score this calculation is a. combination b. permutation c. iactorial d. counting principle 10. (1 pt) Last year over 10,000 students took an entrance exam at a certain state university. Jina's score was at the 66th percentile, and David's score was at the 32nd percentile. Which oi the lollowing must be true about Jina's and David's scores? a. Jina scored higher than David. b. Both Jina and David scored higher than the median. c. Jina got 34 more questions correct than David. d. Jina's and David's scores were both in the bottom half of all scores. Talking: Joanna Grant 11. (10 pt) Adietitian is interested in comparing the sodium cement of real chee cheese substitute. The data iortwo random samples are shown. Compare the distributions, using boxplots. Also, determine it any of the points may be outliers. 420 240 12. (6 pt) Assume that women's weights are normally distributed with a mean of 143 lb and a standard deviation of 29 lb. a. Find the probability of iinding a woman whose weight is less than 95 lb. b. Find the probability of iinding a woman whose weight is between 100 lb and 130 lb. c. Find the weight that equals the 90th percentile. 13. (3 pt) To qualify ior a police academy, candidates must score in the top 10% on a general abilities test. The test has a mean at 200 and a standard deviation of 20. Find the lowest possible score to quality. Assume the test scores are normally distributed. 14. (3 pt) Aiinancial adviser suggests that his client select one of two types oi bonds in which to invest $5,000. Bond X pays a return oi 4% and has a default rate at 2%. Bond Y has a 25% return and a default rate of 1%. When the bond defaults, the investor loses all the investment. Which bond would be a better investment? (Hint: Take a look at Lecture 7 slides, the example on slide #11) 15. (3 pt) A survey from Teenage Research Unlimited found that 30% of teenage consumers receive their spending money irom part-time iobs. It 5 teenagers are selected at random, iind the probability that at least 3 of them will have part-time jobs