A random sample of size 25 from a normal population has the mean = 47.5 and the standard deviation s = 8.4. does this information tend to support or refuse the claim that the mean of the population is = 42.1

Dexter wrote the expression n * n * n * n, and Ellie wrote an equivalent expression in terms of n. What is the value of Ellie's expression when n = 5?

Aaron is practicing for a triathlon. On Sunday, he bikes 12 5/8 miles and swims 5 2/3 miles. On Monday, He Runs 6 3/8 miles. How many total miles does Aaron cover on the Two days? (A) 23 1/6 miles (B) 24 7/12 miles (C) 24 2/3 miles (D) 25 7/12 miles

What is a perpendicular lines

Anthony is an hourly employee with an hourly rate of $21.50. He worked a total of 2,200 hours during the year. He has $650 in interest income and an IRA contribution in the amount of $1,800. Find Anthony's adjusted gross income.

Temperatures have been falling steadily at 5°F each day. What integer expresses the change in the temperature in degrees 7 days from today?

Tim count his friends fingers by five. He count six hands. What number does he say?

5 mm 12 mm -)) What is the length of the hypotenuse?

Which equation has the solutions x = - 3+-√3i/2

The building site is 90 metres long and 45 metre wide. what is the area of the site

If a person walks 1/2 mile in 1/4 hour, how far does that person walk 1 3/4 hours at that rate?