A manufacturer produces widgets whose lengths are normally
distributed with a mean of 9.9 cm and standard deviation of 3.7
cm.
A. If a widget is selected at random, what is the probability it is
greater than 9.7 cm.?
B. What is the standard deviation of the average of samples of size
41 ?
C. What is the probability the average of a sample of size 41 is
greater than 9.7 cm?
Round answer to four decimal places.
A manufacturer produces widgets whose lengths are normally distributed with a mean of 9.9 cm and...
A manufacturer produces widgets whose lengths are normally distributed with a mean of 6.8 cm and standard deviation of 2.1 cm. A. If a widget is selected at random, what is the probability it is greater than 6.8 cm.?_____ B. What is the standard deviation of the average of samples of size 36 ?______ C. What is the probability the average of a sample of size 36 is greater than 6.8 cm?_______ Round answer to four decimal places
A manufacturer produces widgets whose lengths are normally distributed with a mean of 17.3 cm and standard deviation of 2 cm. A. If a widget is selected at random, what is the probability it is greater than 17.4 cm.? Round to dour decimal places B. What is the standard deviation of the average of samples of size 32 ? Round answer to four decimal places C. What is the probability the average of a sample of size 32 is greater...
Question 1 A manufacturer knows that their items have a lengths that are approximately normally distributed, with a mean of 16.7 inches, and standard deviation of 2.7 inches. If 41 items are chosen at random, what is the probability that their mean length is greater than 16.7 inches? (Round answer to four decimal places) Question Help: Message instructor Submit Question
A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 225.5-cm and a standard deviation of 2.2-cm. For shipment, 26 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is greater than 224.2-cm.
A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 176.1-cm and a standard deviation of 2.1-cm. For shipment, 23 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is greater than 177.1-cm.P(M > 177.1-cm) =
The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 308 days or longer. b. If the length of pregnancy is in the lowest 4%, then the baby is premature. Find the length that separates premature babies from those who are not premature. Click to view page 1 of the table. Click to view page 2 of the table. a. The probability...
A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 93.4- cm and a standard deviation of 0.6-cm. Find the proportion of steel rods with lengths between 92 cm and 95.1 cm. Enter your answer as a number accurate to 4 decimal places. A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 155.6-cm and a standard deviation of 2-cm. A steel rod is...
A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 172.4-cm and a standard deviation of 1.4-cm. For shipment, 28 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is less than 172.9-cm. P(M < 172.9-cm) =
A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 158.2-cm and a standard deviation of 0.8-cm. For shipment, 9 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is greater than 158.7-cm. P(M > 158.7-cm) = Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are...
A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 96.1-cm and a standard deviation of 1.5-cm. For shipment, 15 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is greater than 96.4-cm. P(M > 96.4-cm) = Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are...