Difference in Means (practice 1)

Is a difference of $2 significant or not?

• significant

• not significant

Tags

CCSS.7.SP.B.3

Is a difference of -5 pounds significant or not?

• significant

• not significant

Tags

CCSS.6.SP.A.2

If you think dogs (D) are heavier than cats (C), then your alternative hypothesis would be (units: pounds)

• D > C

• D > C

• D < C

• D < C

If you think girls (G) are smarter than boys (B), then your null hypothesis would be (units: GPA)

• G > B

• G > B

• G < B

• G < B

Tags

CCSS.7.SP.B.4

If your alternative hypothesis says X > Y, how should you calculate the difference?

• X - Y

• Y - X

Tags

CCSS.HSS.MD.A.2

If your alternative hypothesis says M < N, how should you calculate the difference?

• M - N

• N - M

Tags

CCSS.HSS.MD.A.2

You think penguins are taller than skunks. You got a difference of 1 inch. Which p-value should you find?

• the area to the left

• the area to the right

You think Marvel movies are longer than DC movies. You got a difference of -3 minutes. Which p-value should you find?

• the area to the left

• the area to the right

If the p-value is 2%, then (select all that apply)

• the difference is significant

• the difference is not significant

• reject the null hypothesis

• fail to reject the null hypothesis

If the p-value is 6%, then (select all that apply)

• the difference is significant

• the difference is not significant

• reject the null hypothesis

• reject the alternative hypothesis