1students often incorrectly believe that inference for a

Assignment Help Basic Statistics

Reference no: EM13353681

1. Students often incorrectly believe that inference for a population proportion based on the sample proportion is always valid if n > 30. They are confusing a general rule of thumb for the Central Limit Theorem which says that as the sample size, n, gets large becomes Normally distributed with a different rule for proportions. The correct rule for proportions is that we can create confidence intervals for p based on if

A. n is at least 10.
B. there are at least 15 successes and 15 failures.
C. np = 5 and n(1 - p) = 5.

2. A sample of 75 students found that 55 of them had cell phones. The margin of error for a 95% confidence interval estimate for the proportion of all students with cell phones is

A. 0.084.
B. (0.633, 0.833).
C. 0.100.

Reference no: EM13353681

Questions Cloud

1a large study was done to compare two treatments for : 1.a large study was done to compare two treatments for recurring ear infections in young children. a total of 150

Q we may not have a de lorean that reaches 88 mph or a : q. we may not have a de lorean that reaches 88 mph or a tardis that can slide through space and time but within the

Q1 explain carefully if all workers and jobs were : q1. explain carefully if all workers and jobs were indistinguishable there would be presently one wage rate pretentious

Qsuppose that the inverse demand curve for paper is p 200 : q.suppose that the inverse demand curve for paper is p 200 - q. the private marginal cost is mcp 80 q and the

1students often incorrectly believe that inference for a : 1.students often incorrectly believe that inference for a population proportion based on the sample proportion is

1i want to know which of two manufacturing methods will be : 1.i want to know which of two manufacturing methods will be better. i create 10 prototypes using the first process and

1i read an article about a new drug which stated that the : 1.i read an article about a new drug which stated that the incidence of side effects was similar to placebo p-value gt

1a poll finds that 54 of the 600 people polled favor the : 1.a poll finds that 54 of the 600 people polled favor the incumbent. shortly after the poll is taken it is disclosed

1a bank wants to get new customers for their credit card : 1.a bank wants to get new customers for their credit card. they try two different approaches in their marketing

User Account

All Pages