Random Variable for Each Statement Term Paper

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7 and 1.98

Z-score

Area

0.7 + 0.00 = 0.70

0.7580

1.9 + 0.08 = 1.98

0.9761

3. Use the continuity correction and describe the region of the normal curve that correspond to the indicated binomial probability. Make a diagram for each.

i) the probability of at least 150 passengers on your next commercial flight.

P (X ? 150) = P (X > (150-0.5)) = P (X > 149.5)

ii) the probability of no more than 6 absent students in a statistics class.

P (X ? 6) = P (X < (6 + 0.5)) = P (X < 6.5)

iii) the probability that fewer than 24 students understanding continuity correction.

P (X < 24) = P (X < (24-0.5)) = P (X < 23.5)

iv) the probability of exactly 46 marbles.

P (X = 46) = P ((46-0.5) < X < (46 + 0.5)) = P (45.5 < X < 46.5)

Chapter 7

DIRECTIONS: Match the description on the left with the correct word or name on the right.

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Question # 1.

i) ____E____ is the probability 1 - (

A. Margin of Error

ii) __F____ a range of values used to estimate the true B. upper confidence value of a population parameter. limit minus the lower

. confidence limit, divided . By 2.

iii) __B____ maximum error of the estimate C. q = 1 -- p

iv) ____G____ critical value D. Point Estimate

v) ____A__ EE. Confidence level

vi)____D____ is a single value used to approximate a F. Confidence interval population parameter.

vii)____C____ sample proportion of failures in a G. z (/2

sample of size n.

2. According to the text what are the 5 observations needed to determine critical values?

i) Sample proportions approximated by normal distribution

ii) level of significance (?)

iii) two-tailed (?/2) to identify rejection/critical region(s)

iv) Confidence level (1 - ?)

v) Determine critical value Z?/2 (from z score tables)

3. Find the critical value corresponding.....

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