In a goodness-of-fit test, the null hypothesis states that the data came from a normally distributed population. The researcher estimated the population mean and population standard deviation from a sample of 500 observations.

In addition, the researcher used 6 standardized intervals to test for normality.

Using a 5% level of significance, the critical value for this test is:

a. 11.1433.
b. 9.3484.
c. 7.8147.
d. 9.4877.

Solution: C) 7.815

Hint: From Chi-square table with (k-r-1)=(6-2-1) = 3 d.f the critical value = 7.8147

18.8 cubic inches.

step-by-step explanation:

volume of a cone = πr²h

r = 1.5 inches

h = 8 inches

pi = 3.14

volume of our cone = × 3.14 × 1.5² × 8 = 18.84 square inches

or equals to 18.8 square inches rounded up to nearest tenth.

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation: