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WorksheetsLesson 10-2 Attendance Quiz
Total questions: 10
Worksheet time: 3hrs 30mins
Assuming that a normal distribution is a reasonable approximation for a binomial distribution, what value is used to approximate the mean?
nq
np
n/p
n/q
Assuming that a normal distribution is a reasonable approximation for a binomial distribution, what value is used to approximate the standard deviation?
npq
np
√np
√npq
Find the mean of a binomial distribution with n=50 and p=0.4
50
4
20
10
Find the variance of a binomial distribution with 50 trials and p= 0.4
12
15
10
20
Find the standard deviation of a binomial distribution with n=50 and p=0.4 (Round to the nearest tenth)
4.2
3.5
12.0
6.2
32 percent of beach goers end up with some form of sunburn on any given day. Find the mean of a survey of 75 beach goers.
25
24
2600
I don't go to the beach
32 percent of beach goers end up with some form of sunburn on any given day. Find the standard deviation of a survey of 75 beach goers.
16.32
17.14
1.74
24
Given that a class consists of 30 students, 70% of them pass in a mathematics test. Find the variance and the standard deviation of the number of students pass the test.
(Separate your answer with a ',' ie. 2.30 , 1.115)
(a)
Given n=200 and p = 61, find the value of μ
(a)
5% of the thermos flasks produced by a company are defective. If a sample of n thermos flasks is chosen at random, the variance of the number of thermos flasks that are defective is 0.475. Find the value of n.
(a)
