Solution-Sampled from the last hour production

Sampled from the last hour production

Reference no: EM131083834

In quality-control applications of hypothesis testing, the null and alternative hypotheses are frequently specified as H0: The production process is performing satisfactorily. Ha: The production process is performing unsatisfactorily. Accordingly, α is sometimes referred to as the producer's risk while β is called the consumer's risk. An injection molded produces plastic golf tees. The process is designed to produce tees with a mean weight of .252 ounce. To investigate whether the injection molded is operating satisfactorily, 40 tees were randomly sampled from the last hour's production.

Table of golf tee weights

0.246
0.253
0.251
0.250
0.256
0.251
0.252
0.247
0.249
0.251
0.254
0.252
0.253
0.251
0.252
0.251
0.250
0.255
0.253
0.253
0.251
0.249
0.251
0.251
0.252
0.251
0.249
0.249
0.249
0.252
0.249
0.253
0.252
0.251
0.248
0.252
0.253
0.249
0.251
0.249

What is the value of the test statistic?

(Round to two decimal places)

What is the rejection region using .01? Choose the correct answer below.

z>1.96
z>1.96
z<-1.96
z<-1.96 or z>1.96
z<-2.575
z<-2.575 or z> 2.575

Reference no: EM131083834

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Sampled from the last hour production

Reference no: EM131083834

Reference no: EM131083834

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