Question

Please help I don't know how to solve this problem :

Trevor is interested in purchasing the local hardware/sporting goods store in the small town of Dove Creek, Montana. After examining accounting records for the past several years, he found that the store has been grossing over $850 per day about 65% of the business days it is open. Estimate the probability that the store will gross over $850 for the following. (Round your answers to three decimal places.)

(a) at least 3 out of 5 business days



(b) at least 6 out of 10 business days



(c) fewer than 5 out of 10 business days



(d) fewer than 6 out of the next 20 business days



If the outcome described in part (d) actually occurred, might it shake your confidence in the statement p = 0.65? Might it make you suspect that p is less than 0.65? Explain.

Yes. This is unlikely to happen if the true value of p is 0.65.
Yes. This is likely to happen if the true value of p is 0.65.
No. This is unlikely to happen if the true value of p is 0.65.
No. This is likely to happen if the true value of p is 0.65.

(e) more than 17 out of the next 20 business days



If the outcome described in part (e) actually occurred, might you suspect that p is greater than 0.65? Explain.

Yes. This is unlikely to happen if the true value of p is 0.65.
Yes. This is likely to happen if the true value of p is 0.65.
No. This is unlikely to happen if the true value of p is 0.65.
No. This is likely to happen if the true value of p is 0.65.