(Solution) 16 Given The Following Hypothesis: = 100 H1: 100 A Randon Sample Of Six Resulted In The Following Values: | Snapessays.com


(Solution) 16 Given the following hypothesis: = 100 H1: 100 A randon sample of six resulted in the following values:


16 Given the following hypothesis:

 

 

H0: µ = 100

 

H1: µ ? 100

 

 

A randon sample of six resulted in the following values: 118, 105, 112, 119, 105, and 111.

 

Assume a normal population. Using the .05 significance level, can we conclude the

 

mean is different from 100 ?

 

 

a. State the decision rule.

 

 

b. Compute the value of the test statistic.

 

 

c. What is your decision regarding the null hypothesis ?

 

 

d. Estimate the p-value

 

 

 

18 The liquid chlorine added to swimming pools to combat algae has a relatively short shelf

 

life before loses its effectiveness. Records indicate that the mean sholf life of a 5-gallon

 

jug of chlorine is 2,160 hours (90 days). As a experiment, Holdlonger was added to the

 

chlorine to find whether it would increase the shelf life. A sample of nine jugs of

 

chlorine had these shelf lives( in hours): df

 

 

2159 2170 2180 2179 2160 2167 2171 2181 2185

 

 

At the .025 level, has Holdlonger increase the self life of the chlorine ? Estimate the p-value.

 

 

 

20 Hugger Polls contends that as agent conducts a men of 53 in-depth home surveys

 

every week. A streamlined survey form has been introduced, and Hugger wants to

 

evaluate its effectiveness. The number of in-depth surveys conducted during a week by a

 

rendom sample of agents are:

 

 

53 57 50 55 58 54 60 52 59

 

62 60 60 51 59 56

 

 

At the .05 level of significance, can we conclude that the mean number of interviews

 

conducted by the agents is more than 53 per week? Estimate the 9-value.

 

 

 

46 For a recent year, the mean fare to fly from Charlotte, North Carolina, to Seattle, Washington,

 

on a discount ticket was $ 267. A random sample of round-trip discount fares on this

 

route last month givs:

 

 

$321 $286 $290 $330 $310 $250 $270 $280 $299

 

$265 $291 $275 $281

 

 

At the .01 significabce level, cn we conclude that the mean fare has increased ?

 

What is the p-value ?

 

 

 

56 The cost of weddings in the united States has skyrocketed in the recent years. As a result,

 

many couples are opting to have their wedding in the Caribbean. A caribbean vacation

 

resort recently advertised in Bride Magazine that the cost of a Carribbean wedding was less

 

than $ 10, 000. Listed below is a total cost in $000 for a sample of 8 Caribbean weddings.

 

 

9.7 9.4 11.7 9.0 9.1 10.5 9.1 9.8

 

 

At the .05 significance level is it reasonable to conclude the mean wedding cost is less

 

than $ 10,000 as advertised ?

 


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This question was answered on: May 23, 2022

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