The median score for the final exam in a chemistry class was 75 and 18 of the students received a ...

The median score for the final exam in a chemistry class was 75 and 18 of the students received a grade greater than 80.

If the test scores were normally distributed, what is the probability that a randomly selected exam had a score between 75 and 80?A) 68
B) 32
C) 80
D) 50

Q. 2

Initial estimates of the probabilities of events are known as:

A) joint probabilities.
B) posterior probabilities.
C) prior probabilities.
D) conditional probabilities.

Q. 3

The F distribution is constructed as the ratio of two random variables following a ________ distribution.

A) normal
B) chi-square
C) Student's t
D) Poisson

Q. 4

Determine the reliability factor from the Student's t distribution table.

A) 1.476
B) 2.015
C) 3.365
D) 4.032

Q. 5

The mode is the most useful measure of central tendency if the data is ordinal.

Indicate whether the statement is true or false

Q. 6

When a variable is measured, a numerical value code is assigned to it, and the result will be in one of four levels of measurement nominal, ordinal, interval, or ratio.

Indicate whether the statement is true or false

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The median score for the final exam in a chemistry class was 75 and 18 of the students received a ...

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