a) A study has shown that 25% of all college textbooks have a price of RM 200 orhigher. It is known that the standard deviation of the prices of all college textbooks isRM 10.50. Supposed the price of all college textbooks have a normal distribution, whatis the mean price of all college textbook?b) Given that Noelle Phone company makes smartphones. The life of an iNphonemodel manufactured by this company has a normal distribution with a mean of 5years and a standard deviation of 6 months. The company is to determine thewarranty period for this new iNphone and any phone that needs a major repairduring this warranty period will be replaced free by the company. What should thewarranty period (in months) be if the company does not want to replace more than1% of the iNphone?.

Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Answered: a) A study has shown that 25% of all…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

Suppose that the distance of fly balls hit to the outfield is normally distributed with a mean of 252 feet in a standard deviation of 50 feet find the 70th percentile of the distribution of the average of 49 fly balls
The distribution of weights for newborn babies is approximately normally distributed with a mean of 7.3 pounds and a standard deviation of 0.7 pounds. The middle 95% of newborn babies weigh between , and , pounds. What percent of newborn babies weigh less than 5.9 pounds? Approximately 50% of newborn babies weigh more than , pounds
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean = 251 days and standard deviation = 12 days. What proportion of pregnancies lasts between 248 and 257 days?
A normal shaped distribution with mean of 40 and standard deviation of 8 is transformed into z-score. Describe the shape, the mean, and the standard deviation for the resulting distribution of z-score.
High density lipoprotein (HDL) in healthy males follows a normal distribution with a mean of 50 and a standard deviation of 8. What proportion of healthy males has HDL exceeding 60?
According to the Empirical Rule, in a Normal Distribution of data you will have percent of the data within 1 standard deviation of the mean, percent of the data within 2 standard deviation of the mean, and percent of the data within 3 standard deviation of the mean.
Average weight of newborn babies is bell-shaped with mean of 3325 grams and standard deviation of 571 grams. What percent of newborn babies weight between 2183 grams and 4467 grams?
Resting pulse rates for healthy adults are found to have approximately a Normal distribution with a mean of 69 beats per minute and a standard deviation of 8.5 beats per minute. Between what two values do the central 80% of all resting pulse rates lie? what is lower value and upper value ?
If a distribution has a mean of 46 and a standard deviation of 1, what value would be -2 standard deviations from the mean?
The scores on a standardazed test are normally distributed with a mean of 115 and standard deviation of 7. What test score is 0.45 standard deviations below the mean?
Assume that the number of pieces per bag has a mean of 78 with a standard deviation of 1. use the empirical rule to find the percentage of values in the distribution between 78 and 79 and what’s the percentage above 79?

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS

a) A study has shown that 25% of all college textbooks have a price of RM 200 or higher. It is known that the standard deviation of the prices of all college textbooks RM 10.50. Supposed the price of all college textbooks have a normal distribution, wl is the mean price of all college textbook?