A sample size of 200 light bulbs was tested and found that11 were defective. What is the 95%c confidence intervalaround this sample proportion?o 0.055±0.0079O 0.055 ±0.0180O 0.055±0.0316O 0.055 + 0.0158 In a Gallup Poll, 354 of 600 adults surveyed said they wantto lose weight. Which of the following expressions gives a90% confidence interval for the proportion of pcople in thepopulation that want to lose weight?0.59(0.41)0.59 ± 1.6453540.59(0.41)3540.59 ± 1.960.59(0.41)0.59 + 1.64516000.59(0.41)0.59 ± 1.961V600

Answer in step 2 Note please post second question seperately. Thankyou

A sample size of 200 light bulbs was tested and found that 11 were defective. What is the 95% confidence interval around this sample proportion? o 0.055 +0.0079 O 0.055 +0.0180 O 0.055 + 0.0316 O 0.055 + 0.0158

A sample size of 200 light bulbs was tested and found that 11 were defective. What is the 95% confidence interval around this sample proportion? o 0.055 +0.0079 O 0.055 +0.0180 O 0.055 + 0.0316 O 0.055 + 0.0158

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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Concept explainers

Hypothesis Testing

In statistics, there are two ways to calculate the sample data. One is descriptive statistics and the other is inferential statistics. In descriptive statistics, all of the information is defined through graphs and charts. In inferential statistics, it allows one to test the hypothesis and it is always used to predict the data. Inferential statistics has two main areas: estimating parameters and hypothesis testing. A hypothesis is a statement about the unknown parameter of the population which we want to verify from the information available from the sample. The premise may or may not be true. The estimation of the whole population would be a reasonable way of deciding if the statistical hypothesis is valid. There are two types of hypotheses. They are null hypothesis and alternative hypothesis.

Question

A sample size of 200 light bulbs was tested and found that
11 were defective. What is the 95%c confidence interval
around this sample proportion?
o 0.055±0.0079
O 0.055 ±0.0180
O 0.055±0.0316
O 0.055 + 0.0158

In a Gallup Poll, 354 of 600 adults surveyed said they want
to lose weight. Which of the following expressions gives a
90% confidence interval for the proportion of pcople in the
population that want to lose weight?
0.59(0.41)
0.59 ± 1.645
354
0.59(0.41)
354
0.59 ± 1.96
0.59(0.41)
0.59 + 1.6451
600
0.59(0.41)
0.59 ± 1.961
V
600

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