Math

StatisticsQ&A LibraryDurations of Pregnancies The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. a. In a letter to “Dear Abby,” a wife claimed to have given birth 308 days after a brief visit from her husband, who was working in another country. Find the probability of a pregnancy lasting 308 days or longer. What does the result suggest? b. If we stipulate that a baby is premature if the duration of pregnancy is in the lowest 3%, find the duration that separates premature babies from those who are not premature. Premature babies often require special care, and this result could be helpful to hospital administrators in planning for that care.Question

Durations of Pregnancies The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days.

a. In a letter to “Dear Abby,” a wife claimed to have given birth 308 days after a brief visit from her husband, who was working in another country. Find the probability of a pregnancy lasting 308 days or longer. What does the result suggest?

b. If we stipulate that a baby is premature if the duration of pregnancy is in the lowest 3%, find the duration that separates premature babies from those who are not premature. Premature babies often require special care, and this result could be helpful to hospital administrators in planning for that care.

Tagged in

Find answers to questions asked by student like you

Q: Determine whether the argument is valid or not. Premises: If you do not study, you cannot do th...

A: Statements:Consider the following:p: You do not studyq: You cannot do the homework.r: You cannot pas...

Q: Among the measures of center discussed, which is the only one appropriate for qualitative data?

A: Mode:Mode is the most frequently occurring value in the data set. Some data sets do not have a mode ...

Q: Suppose x1 and x2 are predictor variables for a response variable y. a. The distribution of all poss...

A: a.Yes, the distribution of all possible values of the response variable corresponding to particular ...

Q: How long does it take to finish the 1161-mile Iditarod Dog Sled Race from Anchorage to Nome, Alaska?...

A: (a)The class width is calculated by using formula,

Q: Suppose that, in a hypothesis test, the null hypothesis is in fact false. a. Is it possible to make ...

A: Type I error:Probability of rejecting the null hypothesis when it is actually true.Type II error:Pro...

Q: Party Mix DJ Marty T is hosting a party tonight and has chosen 8 songs for his final set (including ...

A: The number ways in which 8 different songs playlist can be arranged in which the order matters is,8!...

Q: In Exercises, we have given the value obtained for the test statistic, z, in a one-mean z-test. We h...

A: a).The p-value can be obtained by entering the formula “=2*NORM.S.DIST(-3.08,TRUE)” in Excel:

Q: In each of Problems, we have provided a scenario for a confidence interval. Decide, in each case, wh...

A: It is given that the boxplots of the reveals three outliers and they are questionable to remove.

Q: Can you help asap, please

A: Note:Hey there! Thank you for posting the question. Since there are multiple questions posted, accor...