An online stock trading company makes part of their revenue from clients when th

Question

An online stock trading company makes part of their revenue from clients when the clients trade stocks therefore, it is important to the company to have an good idea of how many trades its clients are making in a given year. In a sample of 114 clients of an online stock trading company, the average number of trades per year was 53 with a standard deviation of 23. Find the LOWER bound of the 95% confidence level of the average number of trades the company's clients make, (please express your answer using 2 decimal places) What is the t-value associated with 25 degrees and 20% in the tail? (please round your answer to 3 of freedom decimal places)

Explanation / Answer

8)here std error =std deviation/(n)1/2 =2.1541

for 95% and 113 degree of freedom critical value of one tailed lower bound t=1.6585

hence lower bound =sample mean +t*std error =49.4275

9)

t value =0.856 for one tailed

please revert on this

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