The Curdle Dairy Co. wants to estimate the proportion p of customers that will purchase its new broccoli-flavored ice cream. Curdle wants to be 90% confident that they have estimated p to within .03.  How many customers should they sample? A. 709 B. 750 C. 700 D. 752

Sherin conducts a study with four groups. Each group has 20 participants. What is the value for df between? a. 3 b. 19 c. 76 d. 79

Existing data (year: 1995) (Observed values) Accident Age group of drivers Severity 18-30 30-50 Fatal 27 22 Grievous 27 15 injured Minor 82 60 50+ 40 44 97 120 Total 89 86 262 injury Total 136 204 437 Source: Office of the Dy. Commissioner of Police (Tra

A programmer plans to develop a new software system. In planning for the operating system that he will​ use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 95​% confident that his estimate is in error by no more than five percentage points? Complete parts​ (a) through​ (c) below. ​a) Assume that nothing is known about the percentage of computers with new operating systems.   n=0.250.25 ​(Round up to the nearest​ integer.) ​b) Assume that a recent survey suggests that about 99​% of computers use a new operating system.   n=nothing ​(Round up to the nearest​ integer.) ​c) Does the additional survey information from part​ (b) have much of an effect on the sample size that is​ required?     A. ​No, using the additional survey information from part​ (b) does not change the sample size.   B. ​No, using the additional survey information from part​ (b) only slightly increases the sample…