{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

2011-10-02 22-23-58 28

# 2011-10-02 22-23-58 28 - Sample Quiz 1 MULTIPLE CHOICE...

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Sample Quiz 1 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) According to the empirical rule, if the data form a "bell-shaped" normal distribution, percent of the observations will be contained within 2 standard deviations around the mean. A) 68.26 B) 95.44 C) 88.89 D) 93.75 TABLE 3-2 The data below represent the amount in grams of carbohydrates in a serving of breakfast cereal. 1115232919222120152517 2) Referring to Table 3-2. the mean carbohydrates in this sample is grams. A) 19.73 B) 23.50 C) 21.70 D) 17.87 E) 15.50 3) Referring to Table 3-2. the standard deviation of the carbohydrate amounts is grams (Using mean-=20). A) 5.02 B) 252.00 C) 25.20 D) 7.20 E) 15.88 4) Referring to Table 3—2, the ﬁve-number summary of the carbohydrate amounts condsts of and A) 11, 15, 20, '23. 29 B)11, 19. 22. 25, 17 C) 11, 23, 22, 25, 17 D) 11, 17, 21. 23, 29 5) Referring to Table 3—2, what type of shape does the distribution of the sample appear to have? A) Right-skewed. B) Left-skewed. C) Symmetrical D) bell-shaped TABLE 4-1 Mothers Against Drunk Driving is a very visible group whose main focus is to educate the public about the harm caused by drunk drivers. A study was recently done that emphasized the problem we all face with drinking and driving. Four hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below: Number of Vehicles Involved Did alcohol play a role? 1 2 3 Totals Yes 50 100 20 170 No 25 175 30 230 Totals 75 275 50 400 —---———.—_._________ 6) Referring to Table 4-1, what proportion of accidents involved alcohol and a single vehicle? A) 25/400 131951400 0245/4“) D) 50/400 7) Referring to Table 4-1, what proportion of accidents involved alcohol or a single vehicle? MRS/400 B)195/4oo (325/400 D) 50/400 8) Referring to Table 4-1, given theta vehicles were involved, what proportion of accidents involved “[13:01; 30 3) 20/170 C) 20/50 D) 20/ 400 9) The probability that a new advertising campaign will increase sales is assessed as being 0.80. The probability that the cost of developing the new ad campaign can be kept within the original budget allocation is 0.40. Assuming that the two events are independent. the probability that the cost is kept within budget and the campaign will increase sales is: A) 0.88 B) 0.20 C) 0.40 D) 0.32 ...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online