It is claimed that the national average for the price of gasoline in $2.66 per gallon. a sample of 25 gas stations in hays yielded a sample mean of $2.89, and it is known that national standard deviation is σ=0.48. compute the test statistic for this test

2.396

Step-by-step explanation:

Given : It is claimed that the national average for the price of gasoline in $2.66 per gallon.

i.e. Population mean :

Sample size :

Sample mean :

Standard deviation :

We assume that the national average for the price of gasoline is normally distributed.

Since the sample size is small (< 30), then we need to calculate t-test statistic for the test .

Hence, the test statistic for this test = 2.396

x = 17

step-by-step explanation:

in the given figure, two triangles are inscribed in a circle where ∠bae ≅ ∠dae which makes the side be and de equal so we can write it as:

3x - 24 = x + 10

solving this equation for x to get:

3x - x = 10 + 24

2x = 34

x = 34/2

x = 17

therefore, the value of x = 17.