Unit 5 Lesson 7 Practice Problems 1. A solid with volume 8 cubic units is dilated by a scale factor of to obtain a solid with volume cubic units.

Find the value of which results in an image with each given volume. (Show your work for credit.)

RECALL: K3=Volume of image/volume of pre-image

a. 216 cubic units

b. 1 cubic unit

c. 1,000 cubic units

2. A solid with surface area 8 square units is dilated by a scale factor of to obtain a solid with surface area square

units.

Find the value of which leads to an image with each given surface area. (Show your work for credit.)

RECALL:

K2=Surface Area of image/Surface Area of pre-image

a. 512 square units

b. ½ square unit

c. 8 square units

Listed below are time intervals (min) between eruptions of a geyser. assume that the "recent" times are within the past few years, the "past" times are from around 20 years ago, and that the two samples are independent simple random samples selected from normally distributed populations. do not assume that the population standard deviations are equal. does it appear that the mean time interval has changed? is the conclusion affected by whether the significance level is 0.10 or 0.01? recent 78 90 90 79 57 101 62 87 71 87 81 84 57 80 74 103 62 past 88 89 93 94 65 85 85 92 87 91 89 91 follow the steps of hypothesis testing, including identifying the alternative and null hypothesis, calculating the test statistic, finding the p-value, and making a conclusions about the null hypothesis and a final conclusion that addresses the original claim. use a significance level of 0.10. is the conclusion affected by whether the significance level is 0.10 or 0.01? answer choices below: a) yes, the conclusion is affected by the significance level because h0 is rejected when the significance level is 0.01 but is not rejected when the significance level is 0.10. b) no, the conclusion is not affected by the significance level because h0 is not rejected regardless of whether a significance level of 0.10 or 0.01 is used. c) yes, the conclusion is affected by the significance level because h0 is rejected when the significance level is 0.10 but is not rejected when the significance level is 0.01. d) no, the conclusion is not affected by the significance level because h0 is rejected regardless of whether a significance level of 0.10 or 0.01 is used.

The table below shows the number of free throw shots attempted and the number of shots made for the five starting players on the basketball team during practice. each player's goal is to make 80% of her shots.

Ineed the answers for this one as well!