Describe in brief all such steps (through Flow Diagram). There are seve testing hypothesis which should always be borne in mind by a researcher. ) You are working as a purchase manager for a company. The following infor supplied to you by two manufacturers of electric bulbs: Mean life of bulb Standard Deviation Company Si in hours in hours A 1300 82 240

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a) The procedure of testing hypothesis requires a researcher to adopt several steps.
Describe in brief all such steps (through Flow Diagram). There are several limitations of
testing hypothesis which should always be borne in mind by a researcher. Illustrate them.
b) You are working as a purchase manager for a company. The following information has been
supplied to you by two manufacturers of electric bulbs:
Mean life of bulb
Standard Deviation
Company
Size of Sample
in hours
in hours
A
1300
82
100
1248
93
100
Suppose you desire to take a risk of 5%. Test whether the quality of two bulbs differ
significantly. (The critical value of z is 1.96 at 5% level of significance).
Transcribed Image Text:a) The procedure of testing hypothesis requires a researcher to adopt several steps. Describe in brief all such steps (through Flow Diagram). There are several limitations of testing hypothesis which should always be borne in mind by a researcher. Illustrate them. b) You are working as a purchase manager for a company. The following information has been supplied to you by two manufacturers of electric bulbs: Mean life of bulb Standard Deviation Company Size of Sample in hours in hours A 1300 82 100 1248 93 100 Suppose you desire to take a risk of 5%. Test whether the quality of two bulbs differ significantly. (The critical value of z is 1.96 at 5% level of significance).
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