Question

Suppose *x* has a distribution with *μ* = 75 and
*σ* = 8.

(a) If random samples of size *n* = 16 are selected, can
we say anything about the *x* distribution of sample
means?

No, the sample size is too small.Yes, the *x*
distribution is normal with mean *μ*_{x} =
75 and *σ*_{x} =
0.5. Yes, the *x* distribution is
normal with mean *μ*_{x} = 75 and
*σ*_{x} = 2.Yes, the *x*
distribution is normal with mean *μ*_{x} =
75 and *σ*_{x} = 8.

(b) If the original *x* distribution is *normal*, can
we say anything about the *x* distribution of random samples
of size 16?

Yes, the *x* distribution is normal with mean
*μ*_{x} = 75 and
*σ*_{x} = 2.No, the sample size is too
small. Yes, the *x* distribution is
normal with mean *μ*_{x} = 75 and
*σ*_{x} = 8.Yes, the *x*
distribution is normal with mean *μ*_{x} =
75 and *σ*_{x} = 0.5.

Find *P*(71 ≤ *x* ≤ 76). (Round your answer to four
decimal places.)

Answer #1

6.5-4) Suppose x has a distribution with μ =
39 and σ = 20.
(a)If random samples of size n = 16 are selected, can
we say anything about the x distribution of sample
means?
Yes, the x distribution is normal with mean
μx = 39 and
σx = 5.
No, the sample size is too small.
Yes, the x distribution is normal with mean
μx = 39 and
σx = 1.3.
Yes, the x distribution is normal with mean...

Suppose x has a distribution with μ = 24 and
σ = 11.
1. If random samples of size n = 16 are selected, can
we say anything about the x distribution of sample
means?
2. If the original x distribution is normal, can
we say anything about the x distribution of random samples
of size 16?
3. Find P(20 ≤ x ≤ 25). (Round your answer to
four decimal places.)
___________________

Updated - exactly how it is asked
Suppose x has a distribution with μ = 59 and
σ = 8.
If the original x distribution is normal, can
we say anything about the x distribution of random samples of size
16?
Yes, the x distribution is normal with mean μ x = 59
and σ x = 0.5.Yes, the x distribution is normal with
mean μ x = 59 and σ x = Yes, the x
distribution is normal with...

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normal.
(a) If Accrotime guarantees a full refund on any defective watch
for 2 years after purchase, what percentage of total production
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Suppose x has a normal distribution with mean μ = 45 and
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Describe the distribution of x values for sample size n = 4.
(Round σx to two decimal places.)
μx =
σx =
Describe the distribution of x values for sample size n = 16.
(Round σx to two decimal places.)
μx =
σx =
Describe the distribution of x values for sample size n = 100.
(Round σx to two decimal places.)
μx...

Suppose x has a distribution with μ = 12 and
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(a) If a random sample of size n = 34 is drawn, find
μx, σx
and P(12 ≤ x ≤ 14). (Round
σx to two decimal places and the
probability to four decimal places.)
μx =
σx =
P(12 ≤ x ≤ 14) =
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Suppose x has a normal distribution with mean μ = 16 and
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μx = σx = Describe the distribution of x values for sample size
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μx = σx = Describe the distribution of x values for sample size
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μx...

Suppose x has a distribution with μ = 29 and σ = 25.
(a) If a random sample of size n = 41 is drawn, find μx, σ x
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μx =
σ x =
P(29 ≤ x ≤ 31) =
(b) If a random sample of size n = 71 is drawn, find μx, σ x
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Suppose x has a normal distribution with mean μ = 26 and
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Describe the distribution of x values for sample size n = 16.
(Round σx to two decimal places.) μx = σx = Describe the
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Suppose x has a normal distribution with mean μ = 52 and
standard deviation σ = 4. Describe the distribution of x values for
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(Round σx to two decimal places.) μx = σx = Describe the
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