can you please help me with this? thanks in advance

Activity 2 Identify the confidence interval estimate and compute its width based on the given data below. 1. Confidence level= 98% 5= 15 n= 10 =21 2. Confidence level= 95% 0= 10 n= 40 *= 23.5 Activity 3. Solve for what is asked. The average hour spent in computer by 20 senior high school students during online dass is 7 hours with a standard deviation of 2 hours. Construct a 98% confidence interval of the average hour spent by all senior high school students. Identify the width of the interval. (Show step by step solution and box your final answer) Activity 4 Direction: Read the following questions carefully. Identify the appropriate sample size of each problem and choose the letter of your answer. Use z-table as needed. Use a separate sheet of paper. 1. Which of the following is the appropriate sample size given a standard deviation of 6.4, confidence interval of u 98% and a margin of error or maximum allowable deviation of 2.35? a. 39 c. 41 b. 40 d. 42 2. Given: Margin of error (d)= 2.19, Confidence interval (CI) of population mean = 90%, and population standard deviation (o)= 5 solve for the appropriate sample size. a. 15 c. 17 16 d. 18 3. Given: d= 3.92 CI= 94% 0=7 n=? a. 24 c. 26 b. 25 d. 27 4. Given: d= 2.4 CI= 98% 0= 6.4 n=? a. 29 c. 31 b. 30 d. 32 5. To estimate the mean price of e-books of senior high schools, with a standard deviation of P80, how many e-books are needed to be selected as samples if we wanted to be 95% confident that the sample mean of e- books is within P20 of the true population a. 59 C. 61 b. 60 d. 62 Activity 5. Identify the number of samples needed in each problem. 1. d= 115 CI= 98.5% 0= 1800 2. d= 85 CI= 98.6% 0= 1650 3. As claimed, the daily allowance of grade 12 public school students in Misamis Oriental is normally distributed with a standard deviation of 10 pesos. If you wanted to estimate with 99.7% confidence the mean daily allowance of grade 12 students within 3 pesos of the true mean, how many students do you need to ask? Activity 6. Solve for what is asked. During the pandemic, the LGU gave cash assistance to those individuals who were badly affected. It was said that the cash assistance is normally distributed with a standard deviation of P500. If a concerned citizen wanted to know if it is true with 97% confidence level within P300 of the true population mean, how many individuals does he need as samples