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[answered] A researcher for Agri-Giant Corporation wants to study how


A researcher for Agri-Giant Corporation wants to study how many pounds of tomatoes are typically picked by a manual labourer in an 8-hour day. The Corporation will consider using picking machines if the labourers cannot pick at least 240 pounds, on average. The researcher randomly sampled 100 farm labourers, found out how many pounds of tomatoes each picked and calculated the sample mean and standard deviation.

Part a)?Which of the following is/are parameter(s) of interest with respect to the new investigation here? (Select all that apply)?

?A.?8 hours?
?B.?The average number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift.?
?C.?100?
?D.?The average number of pounds of tomatoes picked by the 100 manual labourers.?
?E.?The variance of the weights of tomatoes typically picked by a manual labourer in an 8-hour day.?
?F.?240 pounds?
?G.?The total number of pounds of tomatoes each labourer picks in an 8 hour shift.?
?H.?None of the above

Part b)?In testing a hypothesis about a parameter of interest, what would your null hypothesis be?
The total number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is different from 240 pounds.
The total number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is less than 240 pounds.
The mean number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is 240 pounds.
The total number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is 240 pounds.
The mean number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is greater than 240 pounds.
The total number of pounds of tomatoes typically picked by a manuallabourer in an 8-hour shift is greater than 240 pounds.
The mean number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is less than 240 pounds.

Part c)?You would take the alternative hypothesis to be:
two-sided.
it does not matter whether we take a one-sided or two-sided alternative.
one-sided, right-tailed.
one-sided, left-tailed

Part d)?Suppose that, based on data collected, you reject the null hypothesis. Which of the following could you conclude?
There is sufficient evidence to suggest the mean number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is 240 pounds.
There is insufficient evidence to suggest the total number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is 240 pounds.
There is sufficient evidence to suggest the mean number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is less than 240 pounds.
There is insufficient evidence to suggest the total number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is less than 240 pounds.
There is insufficient evidence to suggest the total number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is greater than 240 pounds.
There is sufficient evidence to suggest the mean number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is greater than 240 pounds.

Part e)?Suppose that, based on data collected, you decide that the mean number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is less than 240 pounds.
it is possible that you are making a Type II error.
it is possible that you are making a Type I error.
there must have been a problem with the way the sample was obtained.
it is certainly correct that the mean number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is less than 240 pounds.
it is certainly incorrect that the mean number of pounds of tomatoes typically picked by a manual labourer in an 8-hour shift is less than 240 pounds.

Part f)?Suppose that, based on the data collected, you obtain a?P

 


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