Math 134 Exam 2 Review

Front

In Vietnam, the probability of rain is 70%. Find the probability of it raining at most 2 days in a week.

Back

.0287

Front

Find the mean of a binomial distribution with n=50 and p=0.4

Back

20

Front

Following a normal distribution, the mean wingspan of a hummingbird is 3.5 mm with a standard deviation of 0.76 mm. What percentage of hummingbirds have wingspans between 3.4 and 4.1 mm?

Back

33.7%

Tags

CCSS.HSS.ID.A.4

Front

Compute the probability that a randomly selected senator from the 112th U.S Congress is a Republican or a Female.

Back

.59

Tags

CCSS.HSS.CP.B.7

Front

Find the mean and the standard deviation of guessing correctly on a 5 question true-false quiz.

Back

μ = 2.5; σ = 1.1

Front

What is the formula for the mean of a binomial distribution?

Back

μ = n * p

Tags

CCSS.HSS.ID.A.4

Front

What is the standard deviation of a binomial distribution?

Back

σ = √(n * p * (1 - p))

Front

Define a normal distribution.

Back

A normal distribution is a continuous probability distribution characterized by a symmetric bell-shaped curve, defined by its mean and standard deviation.

Front

What is the significance of the Central Limit Theorem?

Back

The Central Limit Theorem states that the distribution of the sample means approaches a normal distribution as the sample size increases, regardless of the shape of the population distribution.

Front

How do you calculate the probability of at least one event occurring?

Back

P(at least one) = 1 - P(none)