Question

In studies for a medication, 8 percent of patients gained weight as a side effect. Suppose 498 patients are randomly selected. Use the normal approximation to the binomial to approximate the probability that (a) exactly 40 patients will gain weight as a side effect. (b) no more than 40 patients will gain weight as a side effect. (c) at least 50 patients will gain weight as a side effect. What does this result suggest?

Answer #1

In studies for medication, 11 percent of patients gained weight
as a side effect. Suppose 402 patients are randomly selected. Use
the normal approximation to the binomial to approximate the
probability that
a) exactly 45 patients gain weight as a side effect
b) no more than 45 patients will gain weight as a side
effect
c) at least 53 patients will gain weight as a side effect. What
does this result suggest?

In studies for a medication, 88 percent of patients gained
weight as a side effect. Suppose 476 patients are randomly
selected. Use the normal approximation to the binomial to
approximate the probability that
(a) exactly 39 patients will gain weight as a side effect.
(Round to four decimal places as needed)
(b) no more than 39 patients will gain weight as a side effect.
(Round to four decimal places as needed)
(c) at least 48 patients will gain weight...

In studies for a medication, 4 percent of patients gained
weight as a side effect. Suppose 416 patients are randomly
selected. Use the normal approximation to the binomial to
approximate the probability that
(a) exactly 6 patients will gain weight as a side effect.
(b) 6 or fewer patients will gain weight as a side effect.
(c) 27 or more patients will gain weight as a side effect.
(d) between 6 and 14, inclusive, will gain weight as a side...

In studies for a medication,
66
percent of patients gained weight as a side effect. Suppose
465465
patients are randomly selected. Use the normal approximation to
the binomial to approximate the probability that
(a) exactly
1616
patients will gain weight as a side effect.
(b)
1616
or fewer patients will gain weight as a side effect.
(c)
3030
or more patients will gain weight as a side effect.
(d) between
1616
and
3838,
inclusive, will gain weight as a side...

In studies for a medication,
99
percent of patients gained weight as a side effect. Suppose
614614
patients are randomly selected. Use the normal approximation to
the binomial to approximate the probability that
(a) exactly
3939
patients will gain weight as a side effect.
(b)
3939
or fewer patients will gain weight as a side effect.
(c)
5858
or more patients will gain weight as a side effect.
(d) between
3939
and
4545,
inclusive, will gain weight as a side...

In studies for a medication,14 percent of patients gained
weight as a side effect. Suppose 449 patients are randomly
selected. Use the normal approximation to the binomial to
approximate the probability that
(a) exactly 64 patients will gain weight as a side effect.
(b) 64 or fewer patients will gain weight as a side effect.
(c) 54 or more patients will gain weight as a side effect.
(d) between 64 and 86 inclusive, will gain weight as a side
effect.

In studies for a medication, 9 percent of patients gained weight
as a side effect. Suppose 736 patients are randomly selected. Use
the normal approximation to the binomial to approximate the
probability that
(a) exactly 42 patients will gain weight as a side effect. __
(round to 4 decimal places as needed)
(b) 42 or fewer patients will gain weight as a side effect. __
(round to 4 decimal places as needed)
(c) 69 or more patients will gain weight...

In studies for a medication, 4 percent of patients gained
weight as a side effect. Suppose 749 patients are randomly
selected. Use the normal approximation to the binomial to
approximate the probability that (a) exactly 25 patients will gain
weight as a side effect. (b) 25 or fewer patients will gain weight
as a side effect. (c) 18 or more patients will gain weight as a
side effect. (d) between 25 and 37, inclusive, will gain weight
as a side...

In studies for a medication, 12 percent of patients gained
weight as a side effect. Suppose 492 patients are randomly
selected. Use the normal approximation to the binomial to
approximate the probability that (a) exactly 49 patients will gain
weight as a side effect. (b) 49 or fewer patients will gain weight
as a side effect. (c) 76 or more patients will gain weight as a
side effect. (d) between 49 and 75, inclusive, will gain weight
as a side...

A certain flight arrives on time 81 percent of the time. Suppose
122 flights are randomly selected. Use the normal approximation to
the binomial to approximate the probability that
(a) exactly 110 flights are on time.
(b) at least 110 flights are on time.
(c) fewer than 110 flights are on time.
(d) between 110 and 111, inclusive are on time.

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