20. Find the chi square value X 2L corresponding to a sample size of 23 and a confidence level of 90%

I know the answer is 12.338 but I need the steps to get there

Larry, mary and terry each had a full glass of juice. larry drank 3/4 of his mary drank 3/8 of hers larry drank 3/4 of his terry drank 7/10 of his who drank 1/2 less than there juice

Human body temperatures are normally distributed with a mean of 98.20degreesF and a standard deviation of 0.62 degrees f. Find the temperature that separates the top 7% from the bottom 93%. Round to the nearest hundredth of a degree.

Sydney can read 50 pages in 40 minutes. She reads at a constant rate. How many pages can she read per minute?

What is the only prime numbers

A coin bank contains only pennies and nickels and has a total value of $17.00. If there are 1,140 coins, how many nickels does he have?

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.