Find shape of the distribution of sample mean

Reference no: EM13121673

"Mattel Corporation produces a remote-controlled car that requires three AA batteries. The mean life of these batteries in this product is 34 hours. The distribution of the battery lives closely follows the normal probability distribution with a standard deviation of 5.5 hours. As a part of their testing program Sony tests samples of 25 batteries.

(a) What can you say about the shape of the distribution of sample mean?

(b) What is the standard error of the distribution of the sample mean?

(d) What proportion of the sample will have a mean useful life greater than 33.5 hours?

(e) What proportion of the sample will have a mean useful life between 33.5 and 36 hours?

Reference no: EM13121673

Questions Cloud

What percentage of nucleotide bases in faster single-strand : Use the following data to answer the questions 1 and 2. In a sample of double-stranded DNA from a particular bacterium with a circular chromosome, 43% of the nucleotide bases are Guanine (G).

Illustrate what are the proceeds from the bond issue : The bonds pays interest semiannually on June 30 and December 31. The bonds are issued to yield 5%. Illustrate what are the proceeds from the bond issue?

Total amount of manufacturing costs : What was the total amount of manufacturing costs assigned to the 5,000 units in the ending work in process?

Illustrate what is her recognized gain or loss : The donor paid gift tax of $14,000 on the transfer. If Laura later sells the property for $110,000, illustrate what is her recognized gain or loss?

Find shape of the distribution of sample mean : As a part of their testing program Sony tests samples of 25 batteries. What can you say about the shape of the distribution of sample mean?

Compute the employment rate : Compute the employment rate and the level of productivity for each year and for each five-year period, compute the percentage change in the labour force, the employment rate and the level of productivity

Illustrate what is the amount that needs to be recorded : Mason's net income (pre-bonus) is expected to be $3,000,000, and bonus expense is deducted in computing net income. Illustrate what is the amount that needs to be recorded for estimated bonus liability for 2010?

Total amount of manufacturing costs : What was the total amount of manufacturing costs assigned to the 5,000 units in the ending work in process?

How to adjust incubation temperature to grow an organism : in what way or ways could you adjust incubation temperature to grow an organism at less than its optimal growth rate?

User Account

All Pages