Mean 266 Standard Deviation 16

The middle 68 of all pregnancies last between 266-16 and 26616 days 250 to 282.

Solved Length In Days Of Human Pregnancies Is A Normal Chegg Com

Let x denote the variable gestation period for humans.

Mean 266 standard deviation 16. 3 The length of human pregnancies is approximately normally distributed with mean 266 days and standard deviation 16 days. Which of the following will give us what were looking for. Approximately normal with mean 266 days and standard deviation 16 days.

Sample of 20 SD of population 16sqrt 20 35777. Since weve already got Xµ in the probability statement standardization involves only dividing by the standard deviation. We would like to estimate the percentage of pregnancies that last be-tween 270 and 280 days.

B The shortest 16 of pregnancies last less than. Mean of 266 days and a standard deviation of 16. The length of pregnancies varies according to a distribution that is approximately Normal with mean 266 days and standard deviation 16 days.

Given that µ 266 and σ 16 aThe respective Z-score with X 260 is Z X - µσ Z 260 26616 Z -0375 Using Z-tables the probability is P Z -0375 03538 bThe mean of the sampling distribution is equal to the population mean µ 266 The standard deviation of the sampling distribution is equal to σn 1620 3. Mean 266 and standard deviation 16. The length of human pregnancies from conception to birth approximates a normal distribution with a mean of 266 days and a standard deviation of 16 days.

The length of human pregnancies from conception to birth is normally distributed with mean 266 days and standard deviation 16 days. Gestation periods of humans have a mean of 266 days and a standard deviation of 16 days. Use the 68-95-997 rule to estimate the following.

B more than 278 days. P sample mean is within 5 days of the population mean. For each part follow the four-step process.

C The probability of a pregnancy lasting longer than 314 days is. A Between what values do the lengths of the middle 68 of all pregnancies fall. Find the percentage of human pregnancies and round to 4 decimal places that last a less than 245 days.

Determine the standardized version of x and compute the z score for the gestation period of 227 days. Mean 266 and standard deviation 16 4 8. Draw a density curve for this distribution on which the.

Length of pregnancies. Let X represent the length of pregnancy of an individual and X represent the sample mean for a given number of pregnancies. P -535777 z 535777 P -13975 z 13975 NORMSDIST -13975 0811.

The length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with mean 266 days and standard deviation 16 days. According to a distribution that is approximately Normal with mean 266 days and standard deviation 16 days. The lengths of human pregnancies are approximately normally distributed with a mean of 266 days and a standard deviation of 16 days.

C between 245 and 278 days. The length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with a mean of 266 days and standard deviation of 16 days. D There is a probability of 50 that a pregnancy will last longer than.

The proportion of the lengths of pregnancies that fall between 250 days and 282 days. Round z score to two decimal places and be specific in your interpretation. A Normal model with mean 266 days and standard deviation 16 days.

A At what percentile is a pregnancy that lasts 240 days thats about 8 months. A At what percentile is. What is the probability that a randomly selected pregnancy.

Length of pregnancies The length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with mean 266 days and standard deviation 16 days. B How short are the shortest 25 of all pregnancies. NORMSDIST -16771 0476 0r 476.

B What percent of pregnancies last between 240 and 270 days between 8 and 9 months. Use the 68-95-997 rule to answer the following questions. 1The distribution of lengths of human pregnancies measured in days from conception to birth follows the N266 16 normal curve ie is Normal with mean µ 266 days and standard deviation s 16 days.

A The probability is 095 that a pregnancy will last between. We want P8 X µ 8 which well compute by standardizing and looking up the answer in Table B2.

Https Www Stat Colostate Edu Inmem Gumina St201 Class16 Downloads Normaldist1 Sol Pdf