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Ill SMART '5' 8:31 AM 6 docs.google.com 4@' A family with two children is selected 2 points at random from a list of families with two children and the sexes of the two children were observed. Consider the following events defined on S = {(boy, boy), (boy, girl), (girl, boy), (girl, girl)}: * B event that there are two girls X event that there is at least one boy N , event that there is no girl Which of the following is (are) NOT FALSE? 0 B , X, and N are mutually exclusive events 0 (BuX) is mutually exclusive with the event N 0 Both are true 0 None ofthe above In a random sample of 15 bowls raisin 2 points cereal, each with 3/4 cup of a cup of cereal and a 1/2 cup of skim milk, the mean number of calories is 220 with a standard deviation of 6. Assuming that the data is normally distributed, what is the 95% confidence interval for the mean number of calories of such bowls of cereal? * 0 (216.8570, 223.1430) 0 (216.9636. 223.0364) 0 (216.6770, 223.3230) 0 (216.6971,223.3029) 0 None ofthe above .II SMART '5' 8:32 AM 6 docs.google.com 4@' What among the following will result 2 points in the narrowest confidence interval? 1: Small sample size and 95% confidence level Small sample size and 98% confidence level Large sample size and 95% confidence level Large sample size and 98% confidence level This cannot be answered without the standard deviation None of the above 000000 A survey indicates that for each visit 2 points to a supermarket, the time spent by a shopper follows a normal distribution with mean and standard deviation of 45 and 12 minutes, respectively. What is the probability that he will stay in the supermarket for more than 40 minutes? * 0 None of the above The probability that a patient 2 points "Iii SMART Q\" 8:32 AM 6 docs.google.com 4@' The probability that a patient 2 points recovers from a delicate heart operation is 0.9. What is the probability that exactly 5 of the next 7 patients having this operation survive? * 0 None of the above If the raw data have 2 and 3 decimal 2 points places in creating a histogram. What will be the class size if the value of c is 2.4467? * 0 None of the above 2 points AC u (355 C) = (A n BC) u (AC u C) Ill SMART '5' 8:33 AM 6 docs.google.com The variance of a data set may take 2 points on the values [0. 0). * Descriptive statistics are methods for 2 points using sample data to make general conclusions about populations. * Variables B, D, and E are measured in 2 points levels, respectively. * ordinal, ordinal, and ratio nominal, ordinal, and interval nominal, ordinal, and ratio None of the above ordinal, nominal, and ratio 00000 If events A and B are mutually 2 points exclusive and events B and C are mutually exclusive, then events A and C are mutually exclusive. * .II SMART '5' 8:32 AM 6 docs.google.com 4@' \\If the P(success)=0.30 from 10 trials, 2 points then as x increases, the probability also increases * A researcher discovered a fabric 2 points made out from plant. Despite all efforts by the quality control department, the fabric always contains a maximum of 2 defects. A certain fabric made contains an average of 0.65 defects per 500 yards. Find the probability that a given piece of 500 yards of this fabric for the pet clothes will contain exactly 2 defects. * 0 None of the above