statistics and probability

5. A fastener company is supplying washers to a manufacturer of kitchen appliances who has specified that the outside diameter be 0.500 ± 0.025 inch. Measurements made on 250 washers show that the process is in good statistical control, the diameters are normally distributed, and the mean and standard deviation for the process are 0.505 and 0.0065 inch, respectively. What percent of the washers made by this process are within the specifications? Sketch the appropriate graph to represent the distribution of the process along with the specifications.

==this is what i have so far P(0.475<X<0.525)=P((0.475-0.505)/0.0065<Z<(0.525-0.505)/0.0065)=P(-4.6154<Z<3.0769)=0.998954-0.0000=0.998952
=== is this correct

  1. 👍 0
  2. 👎 0
  3. 👁 60
asked by faye

Respond to this Question

First Name

Your Response

Similar Questions

  1. math-statistics

    An appliance manufacturer stockplies washers and dryers in a large warehouse for shipment to retail stores. Sometimes in handling then the appliances get damaged. Even though the damage may be minor, the company must sell those

    asked by Sherri on January 7, 2009
  2. Marketing

    Does anybody know about Miele Domestic Appliances? Its a German manufacturer of domestic appliances, I need to know why they are so successful in the marketplace, and what threats does they face. I went to thier websites but they

    asked by Jon on September 8, 2007
  3. statistics and probability

    A company manufactures washers, about 5% of which are defective. If a random sample of 100 washers are inspected, what is the probability that fewer than 4 are defective?

    asked by ashley on November 2, 2014
  4. algebra 1

    At Jack's Laundromat, 6 of the washers must be replaced. These washers represent of the total number of washers. If w represents the total number of washers, which equation could be used to determine the value of w?

    asked by Alex on March 20, 2014
  5. statistics

    The inside diameter of metal washers produced by a company are normally distributed with a mean of .5 inches and a standdrd deviation of .01 inches. Of all washers produced .8% of the washers are rejected because they are too

    asked by josh on June 28, 2014
  6. dressmaking

    Which type of fastener becomes more secure when yu try to pull the garment pieces apart? a) snap fastener b)hook and eye c)velcro d)zipper I feel the answer if b)but feel it cld also be d)What do yu think is right

    asked by karina on March 20, 2012
  7. Statistics help

    A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 306 lb. and a variance of 2209. (Give your answers correct to four decimal places.) (a) If a truck can carry 3940 lb.

    asked by DeeDee7 on June 14, 2013
  8. math

    A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 306 lb. and a variance of 2209. (Give your answers correct to four decimal places.) (a) If a truck can carry 3940 lb.

    asked by Sue7 on June 21, 2013
  9. Math help

    A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 306 lb. and a variance of 2209. (Give your answers correct to four decimal places.) (a) If a truck can carry 3940 lb.

    asked by Gayle 79 on June 17, 2013
  10. Math, statistics

    A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 306 lb. and a variance of 2209. (Give your answers correct to four decimal places.) (a) If a truck can carry 4070 lb.

    asked by hanjay on June 8, 2014

More Similar Questions