Which of the following criteria are necessary conditions for making a statistical inference? sample size greater than 30, or an approximately normal data set sample size greater than 100 convenience sample simple random sample systematic sample

1 and 4 are correct

Step-by-step explanation:

the correct answer is b) histograms can be used to exhibit the shape of distributions. this is because histograms count the frequency of each possible answer, so one is able to see which results are more common and which are less common.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,