4.7
4.8
4.11
4.12
4.18
4.21
4.22
4.30
4.31
Label the ve balls as R1, R2, R3, Y1 and Y2. The selection of two balls is accomplished in two stages to
produce the simple events in the tree diagram on the next page.
First Ball Second Ball Simple Events First
Statistics I E JEE- (VIEW)
Part I: Multiple Choice (Only 2% answer is correct) ()
1. Which one of the following is pot a continuous probability distribution?
A) The Exponential distribution B) The Normal distribution C) The Poisson distribution
D) The Uni
9.3-9.5
9.3
Q16 An engineering research center claims that through the use of a new computer
control system, automobiles should achieve, on average, an additional 3 miles per
gallon of gas. A random sample of 100 automobiles was used to evaluate this pro
12
12.6 An
aircraft company wanted to predict the number of worker-hours necessary to
finish the design of a new plane. Relevant explanatory variables were thought to
be the plane's top speed, its weight, and the number of parts it had in common
with oth
9.6 chapter exercise and applications
Q.48 At the insistence of a government inspector, a new safety
device is installed in an assembly-line operation. After the
installation of this device, a random sample of 8 days' output
gave the following results for
Chapter 14
14.2
14.3
14.4
14.5
14.1 3, 4, 10
12, 16
19, 20
23, 27, 28, 32
34, 38, 41
14.3 In an online poll run by a Hong Kong newspaper, 45% of people declared they
go to the gym once a week, 25% go two times, 10% go three times, and the rest
do not go.
11.5-11.7
11.32 Given the simple regression model
Y = 0 + 1X
and the regression results that follow, test the null hypothesis that the slope
coefficient is a versus the alternative hypothesis of greater than zero using
probability of Type I error equal t
11.1 2, 5
11.2 7 a, d, e, 11, 14, 15, 16
11.3 18 a, 19, 20
11.3 18 a, 19, 20
11.4 25 a, c, 26, 27, 28, 31
11.2 The following data give X, the price charged per piece of
plywood, and Y, the quantity sold (in thousands). Price per
Piece, X Thousands of Pie
9.1
Q2 The Federal Reserve Board is meeting to decide if it should reduce interest rates
in order to stimulate economic growth. State the null and alternative hypotheses
regarding economic growth that the board would formulate to guide its decision.
Ans: