Question

Babies born after a gestation period of 32–35 weeks have mean weight of 2600 grams and a standard deviation of 660 grams. Babies born after a gestation period of 40 weeks have a mean weight of 3500 grams and a standard deviation of 470 grams. Suppose a 34– week gestation period baby weighs 3100 grams and 40-week gestation period baby weighs 3800 grams. What is the z-score for the 34-week gestation period baby? . What is the z-score for the 40-week gestation period baby? . Which baby weighs less relative to the gestation period? Write A if you believe the 40 week baby weighs relatively less. Type B if you believe the 34-week baby weighs relatively less.

Answer #1

Suppose babies born after a gestation period of 32 to 35 weeks
have a mean weight of 3000 grams and a standard deviation of 900
grams while babies born after a gestation period of 40 weeks have a
mean weight of 3500 grams and a standard deviation of 440 grams. If
a 32-week gestation period baby weighs 2575 grams and a 40-week
gestation period baby weighs 3075 grams, find the corresponding
z-scores. Which baby weighs less relative to the gestation...

Suppose babies born after a gestation period of 32 to 35 weeks
have a mean weight of 2900 grams and a standard deviation of 600
grams while babies born after a gestation period of 40 weeks have a
mean weight of 3200 grams and a standard deviation of 430 grams. If
a 35-week gestation period baby weighs 3250 grams and a 40-week
gestation period baby weighs 3550 grams, find the corresponding
z-scores. Which baby weighs moremore relative to the gestation...

Suppose babies born after a gestation period of 32 to 35 weeks
have a mean weight of
2700 grams and a standard deviation of 600 grams while babies
born after a gestation period of 40 weeks have a mean weight of
3300 grams and a standard deviation of 455 grams. If a 33-week
gestation period baby weighs 3175 grams and a 41-week gestation
period baby weighs 3775 grams, find the corresponding z-scores.
Which baby weighs more relative to the gestation...

Suppose babies born after a gestation period of 32 to 35 weeks have
a mean weight of 2900 grams and a standard devition of 800 grams
while babies born after a gestation period of 40 weeks have a mean
weight of 3200 grams and a standard deviation of 485 grams. If a
32-week gestation period baby weighs 2525 grams and a 41-week
gestation period baby weighs 2825 grams, find the corresponding
z-scored. Which baby weighs less relative to the gestation...

The following three questions refer to the same
data. Suppose babies born prematurely have a mean weight
of 2700 grams and a standard deviation of 900 grams while babies
born after full term have a mean weight of 2900 grams and a
standard deviation of 385 grams. If a premature baby weighs 2950
grams and a full term baby weighs 3150 grams, find the
corresponding z-scores. Which baby weighs more relative to the
gestation period?

Suppose babies born in a large hospital have a mean weight of
3200 grams, and a standard deviation of 526 grams. If 100 babies
are sampled at random from the hospital, what is the probability
that the mean weight of the sample babies would differ from the
population mean by less than 50 grams?

Suppose babies born in a large hospital have a mean weight of
3831 grams, and a variance of 108,900. If 65 babies are sampled at
random from the hospital, what is the probability that the mean
weight of the sample babies would be less than 3882 grams? Round
your answer to four decimal places.

Suppose babies born in a large hospital have a mean weight of
3685 grams, and a variance of 3330,625.
If 113 babies are sampled at random from the hospital, what is
the probability that the mean weight of the sample babies would
differ from the population mean by less than 50 grams? Round your
answer to four decimal places.

Suppose babies born in a large hospital have a mean weight of
4090 grams, and a variance of 313,600. If 64 babies are sampled at
random from the hospital, what is the probability that the mean
weight of the sample babies would be greater than 4144 grams? Round
your answer to four decimal places.

The mean birth weight of male babies born to 121 mothers taking
a vitamin supplement is
3.633.63
kilograms with a standard deviation of
0.630.63
kilogram. Use a 0.05 significance level to test the claim that
the mean birth weight of all babies born to mothers taking the
vitamin supplement is equal to 3.39 kilograms, which is the mean
for the population of all male babies.
State the null and alternative hypotheses. Find the z-score and
the P value and make...

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