Duun
Q.3. Verify the De Morgan's laws if
U= {a, b,c, d,e},
A = {9,6},
B = {a, b,c}

Arandom sample of 45 observations results in a sample mean of 68. the population standard deviation is known to be 23 a. compute the margin of error at a 959% confidence interval. b. compute the 95% confidence interval for the population mean c. compute the 90% confidence interval for the population mean. d. compute the 75% confidence interval for the population mean

Ahousekeeper mixed 5 gallons of blue paint with every 9 gallon of yellow paint in order to make a green paint which ratio of gallon of blue paint to gallon of yellow paint will make the same shade of green paint

I've tried but its still not right! what is ae ? enter your answer in the box. = units