An airline estimates that 97% of people booked on their flights actually show up.If the airline books 71 people on a flight for which the maximum number is 69,what is the probability that the number of people who show up will exceed the capacity of the plane?

A) 0.6324
B) 0.3676
C) 0.6410
D) 0.1150
E) 0.2526

Write an absolute value inequality that represents the graph.

A) $|x|\le 16$ or $|x|\ge 21$
B) $|x+18.5|<2.5$
C) $|x-2.5|<18.5$
D) $|x+2.5|<18.5$
E) $|x-18.5|<2.5$

When calculating the standard deviation,what must be done in order to obtain an unbiased estimate?

A) subtract 1 from X
B) add 1 to X
C) subtract 1 from n
D) add 1 to n

Two types of flares are tested for their burning times (in minutes) and sample results are given below. $\text{ Brand }\mathrm{X}$ $\text{ Brand }\mathrm{Y}$ n = 35 n = 40 $\overline{x}$ = 19.4 $\overline{x}$ = 15.1 s = 1.4 s = 0.8
Construct a 95% confidence interval for the difference $$\mu \mathrm{X}$$ - $\mu Y$ based on the sample data.

A) (3.5,5.1)
B) (3.8,4.8)
C) (3.6,5.0)
D) (-4.7,-3.9)
E) (3.2,5.4)

A shoe store sells a pair of shoes for $60.5 . The cost of the shoes to the store is $41.54 . What is the markup?

A) $ 16.51
B) $23.56
C) $19.00
D) $13.56
E) $18.96

In a one-tail test,the p-value is found to be equal to 0.068.If the test had been two-tail,the p-value would have been:

A) 0.932
B) 0.466
C) 0.034
D) 0.136

At the same time as compound-interest Canada Savings Bonds were being sold with guaranteed minimum annual rates of 5.25%, 6%, and 6.75% in the first 3 years of their 12-year term, a trust company offered 3-year "Bond-Beater" GICs paying 5.75%, 6.5%, and 7.25% compounded annually in the 3 successive years. If the CSBs earn their minimum interest rates, how much more will $4,000 earn over the 3 years if invested in the GIC?

Define significance level.

Maxine works at an amusement park.She recorded the number of ice cream cones sold each day,along with the high temperature in Fahrenheit degrees.Using her data,she wrote a linear regression equation of y = 9x - 487.If the temperature,or x,is 85°F,how many ice cream cones could Maxine expect to sell?

A) 245
B) 278
C) 753
D) 765