Superb Professors

Suppose we have a binomial experiment in which success is defined
to be a particular quality or attribute that interests us.
(a) Suppose n = 28 and p = 0.31. (For each answer, enter a number. Use 2 decimal places.)
n·p =
n·q =
Can we approximate p̂ by a normal distribution? Why? (Fill in the blank. There are four answer blanks. A blank is represented by _____.)
_____, p̂ _____ be approximated by a normal random variable because _____ _____.
first blank
Yes
No
second blank
can
cannot
third blank
n·p and n·q do not exceed
n·p does not exceed
n·q does not exceed
n·p exceeds
both n·p and n·q exceed
n·q exceeds
fourth blank (Enter an exact number.)
What are the values of μp̂ and σp̂? (For each answer, enter a number. Use 3 decimal places.)
μp̂ =
mu sub p hat =
σp̂ =
sigma sub p hat =
(b) Suppose n = 25 and p = 0.15. Can we safely approximate p̂ by a normal distribution? Why or why not? (Fill in the blank. There are four answer blanks. A blank is represented by _____.)
_____, p̂ _____ be approximated by a normal random variable because _____ _____.
first blank
Yes
No
second blank
can
cannot
third blank
n·p and n·q do not exceed
n·p does not exceed
n·q does not exceed
n·p exceeds
both n·p and n·q exceed
n·q exceeds
fourth blank (Enter an exact number.)
(c) Suppose n = 42 and p = 0.21. (For each answer, enter a number. Use 2 decimal places.)
n·p =
n·q =
Can we approximate p̂ by a normal distribution? Why? (Fill in the blank. There are four answer blanks. A blank is represented by _____.)
_____, p̂ _____ be approximated by a normal random variable because _____ _____.
first blank
Yes
No
second blank
can
cannot
third blank
n·p and n·q do not exceed
n·p does not exceed
n·q does not exceed
n·p exceeds
both n·p and n·q exceed
n·q exceeds
fourth blank (Enter an exact number.)
What are the values of μp̂ and σp̂? (For each answer, enter a number. Use 3 decimal places.)
μp̂ =
mu sub p hat =
σp̂ =
sigma sub p hat =
 
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