An investment website can tell what devices are used to access the site. The site managers wonder whether they should enhance th
e facilities for trading via "smart phones" therefore they want to estimate the proportion of users who access the site that way. They draw a random sample of 200 investors from their customers. Suppose that the true proportion of smart phone users in 36%. What is the probability that the sample proportion is between 0.30 and 0.40? Hint: You'll need to find one z-score for 0.30 and another for 0.40. Then find the area between the two z-scores.
15.9 / 100 = c / 25,250....15.9 c sections to 100 women = c to 25,250 women cross multiply (100)(c) = (15.9)(25,250) 100c = 401475 c = 401475/100 c = 4014.75 <===
Based on the information that they give you, prove "this". In your statements, you can use any of the properties of a triangle, then give the name of the property in your reasons.
Explanation: The words "more than" in mathematical terms refer to the process of addition. In this case, we need to have 8 more than x , or x+8 . Hence, the answer, x+8
