Question

Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with μ=96μ=96 and σ=15σ=15.

(a) What proportion of children aged 13 to 15 years old have
scores on this test above 88.5 ? (NOTE: Please enter your answer in
decimal form. For example, 45.23% should be entered as
0.4523.)

Answer:

(b) Enter the score which best approximates the lowest 8 percent
of the distribution.

Round your answer to the nearest tenth.

Answer:

(c) Enter the score which best approximates the highest 44
percent of the distribution.

Round your answer to the nearest tenth.

Answer:

Answer #1

Scores on a certain intelligence test for children between ages
13 and 15 years are approximately normally distributed with μ=111
and σ=21.
(a) What proportion of children aged 13 to 15 years old have
scores on this test above 97 ? (NOTE: Please enter your answer in
decimal form. For example, 45.23% should be entered as 0.4523.)
(b) Enter the score which marks the lowest 30 percent of the
distribution.
(c) Enter the score which marks the highest 15 percent...

Scores on a certain intelligence test for children between ages
13 and 15 years are approximately normally distributed with μ=106
μ=106 and σ=24 σ=24 .
(a) What proportion of children aged 13 to 15 years old have
scores on this test above 96 ? (NOTE: Please enter your answer in
decimal form. For example, 45.23% should be entered as 0.4523.)
Answer:
(b) Enter the score which marks the lowest 25 percent of the
distribution. Answer:
(c) Enter the score which...

Scores on a certain intelligence test for children between ages
13 and 15 years are approximately normally distributed with μ=101
and σ=21. (a) What proportion of children aged 13 to 15 years old
have scores on this test above 87 ? (NOTE: Please enter your answer
in decimal form. For example, 45.23% should be entered as 0.4523.)
Answer: 0.7475 (b) Enter the score which marks the lowest 30
percent of the distribution. Answer: 0.0004 (c) Enter the score
which marks...

Scores on a certain intelligence test for children between ages
13 and 15 years are approximately normally distributed with
μ=96μ=96 and σ=18.
(a) What proportion of children aged 13 to 15 years old have
scores on this test above 86 ? (NOTE: Please enter your answer in
decimal form. For example, 45.23% should be entered as
0.4523.)

(1 point) Scores on a certain intelligence test for children
between ages 13 and 15 years are approximately normally distributed
with ?=101μ=101 and ?=24σ=24.
(a) What proportion of children aged 13 to 15 years old have
scores on this test above 83 ? (NOTE: Please enter your answer in
decimal form. For example, 45.23% should be entered as
0.4523.)
Answer:
(b) Enter the score which marks the lowest 25 percent of the
distribution.
Answer:
(c) Enter the score which marks...

1.Scores on a certain intelligence test for children
between ages 13 and 15 years are approximately normally distributed
with μ=106 and σ=18
(a) What proportion of children aged 13 to 15 years
old have scores on this test above 96? 0.710743
(b) Enter the score which marks the lowest 20 percent
of the distribution. 90 85
help with part c
(c) Enter the score which marks the highest 15 percent of the
distribution.

Scores on a certain intelligence test for children between ages
13 and 15 years are approximately normally distributed with ?=101
and ?=24.
(a) What proportion of children aged 13 to 15 years old have
scores on this test above 91? (Reminder: proportions are between 0
and 1 - don't put in percentages!)
(b) Enter the score which marks the lowest 30 percent of the
distribution.
(c) Enter the score which marks the highest 15 percent of the
distribution.

Patients wait 130 days on average for a heart transplant with a
standard deviation of 21 days. (a) What proportion of patients wait
more than 117.4 days? (NOTE: Please enter your answer in decimal
form. For example, 45.23% should be entered as 0.4523.) (b) What
proportion of patients wait fewer than 136.3 days? (NOTE: Please
enter your answer in decimal form. For example, 45.23% should be
entered as 0.4523.) (c) Enter the score which best approximates the
lowest 42 percent...

The distribution of math test scores on a standardized test
administered to Texas tenth-graders is approximately Normal with a
mean of 615 and a standard deviation of 46. Below what score do the
worst 2.5% of the scores fall? (Hint: apply the 68-95-99.7 Rule.)
Round your answer to the nearest integer.

Scores on a test have a mean of 72.9 and 9 percent of the scores
are above 85. The scores have a distribution that is approximately
normal. Find the standard deviation. Round your answer to the
nearest tenth, if necessary.

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