Question: Find a 95% confidence interval A study was done on pregnant women who smoked during their pregnancies. In particular, the researchers wanted to study the

Find a 95% confidence interval

A study was done on pregnant women who smoked during their pregnancies. In particular, the researchers wanted to study the effect that smoking has on pregnancy length. A sample of 114 pregnant women who were smokers participated in the study and was followed until the birth of their children. At the end of the study, the collected data were analyzed, and it was found that the average pregnancy length of the 114 women was 260 days. From a large body of research, it is known that the length of human pregnancy has a standard deviation of 16 days.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

-Q1:is there a hypothesis that is explicitly stated?Identify it and give evidence to support why you believe it is the hypothesis.Is the stated hypothesis directional (which direction?) or...

2.In a geology course, students were learning to use a balance scale to make accurate weighings of rock samples. One student plans to weigh a rock 20 times and then calculate the average of the 20...

1) The makers of Mini-Oats cereal have an automated packaging machine that is set to fill boxes with 24 ounces of cereal.At various times in the packaging process, we select a random sample of 100...

please help me on this and elaborate more thank you Based on the article given, provide the following information that can be gained from the articles: Research design/approach: Research...

Assessment & Evaluation in Higher Education Vol. 29, No. 1, February 2004 Academic procrastination and statistics anxiety Anthony JOnwuegbuzieDepartment of Educational Measurement and Research,...

1. If the main finding involves a test of hypothesis, what is the null hypothesis for that test? Do they have sufficient evidence to reject that null hypothesis? 2.Can you think of any potential...

I need the code in R studio, to find the results of table 5.7 5.6 MISSING DATA In many problems, some variables will be unrecorded for some cases. The methods we study in this book generally assume...

1. Here are several situations in which there is an incorrect application of the ideas in statistical inference.Explain what is wrong and why it is wrong. (a) A significance test rejected the null...

Summarize the attached document of the WDR 2018 OVERVIEW Learning to realize education's promise Learning to realize education's promise Assess learning Act on evidence Align actors to make it a...

Question Currently an herbal salve sold over the counter is used to treat an annoying rash; no major health issues, the patient simply has green dots on their entire body. The herbal salve has been...

A study published in Applied Psycholinguistics (June 1998) compared the language skills of young children (1630 months old) from low-income and middle-income families. A total of 260 children65 in...

Let G be group and H, K less then or equal to G. Then show that (a) If H K, then (G/H)/(K/H) G/K (b) If G = HK, then G/(HK) G/H x G/K.

The accounting principle that relates to more, rather than less, extensive footnotes in reports is known as _ _ _ _ _ _ _ _ .

An elongating ribosome is bound to appropriate tRNAs in both the A and P sites and is ready for peptidyl transfer. What happens next? A. The carboxyl end of the polypeptide chain is released from the...