A consumer product magazine recently ran a story concerning the increasing prices of CINCO-FONES. The story stated that CINCO-FONE prices dipped a couple of years ago, but now are beginning to increase in price because of added features. According to the story, the average price of all CINCO-FONES a couple of years ago was $215.00. A random sample of n = 22 CINCO-FONES was recently taken and entered into a spreadsheet. It was desired to test to determine if that average price of all CINCO-FONES is now more than $215.00. Find a rejection region appropriate for this test if we are using α = 0.05.

the correct answer is 1: 2

step-by-step explanation:

hope this your welcome : )

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

c = 0.429t

step-by-step explanation:

the constant rate at which carlos harvests cassava is 35 minutes per 15 cassavas 15/35 = 0.429 cassava per minute

therefore, an equation that models the number of cassava (c) that harvest carlos in a time (t) is the following:

where t is the time in minutes.

this means that when 35 minutes have elapsed 15 cassava have been harvested, at 70 minutes 30 cassava have been harvested and so on.