1) the sample of fat value of n=10 randomly selected hot dogs made by a fast food was tested and found that the mean of fat value is 24.86 and the sample standard deviation is 4.134. the population mean fat value is known to be 21.90. assuming that the n=10 samples of hot dogs were selected from a normal population distrubution.
Determine the probabality that the fat value will be less than 24.86, using matlab or excel find the answers for n=10,11,12,13,14,or 15
2) a record shows that 25% of the recorder made in a factory or defective. a lot of n=192 recorders are randomly choosen for inspection
a) find the probabality that at most 55 will be defective
b) find the probability that between 50 and 66 will be defective
c) find answers for n=193,194,195,196,197,198,199,200 using matlab or excel