(14) It is claimed that in a bushel of peaches, less than 10% are defective. A...

(14) It is claimed that in a bushel of peaches, less than 10% are defective. A sample of 100 peaches is examined and 12 are found to be defective. If α =0.05, what will be the decision?

Expert Solution

Null hypothesis

Alternative hypothesis

We have for given example,
Population proportion value is =0.1
x=12

n=100
Level of significance =   0.05
Estimate for sample proportion = 0.12

Z test statistic formula for proportion

=0.67

P value is 0.7475.................by using Excel command NORMSDIST(0.67) or by using Z table.

P value is 0.7475 > 0.05

Therefore, we fail to reject H0.

We do not have sufficient evidence at to say that ,   in a bushel of peaches, less than 10% are defective.

orchestra answered 2 years ago

It is claimed that in a case of auto parts, less than 10% are defective. A...

It is claimed that in a case of auto parts, less than 10% are defective. A sample of 400 parts is examined and 50 are found to be defective. What is the null hypothesis? H0: p ? 0.10 H0: p ? 0.10 H0: p ? 0.10 H0: p < 0.10

It is claimed that the mean viscosity of product 2 is less than the mean viscosity...

It is claimed that the mean viscosity of product 2 is less than the mean viscosity of product 1. To test this claim 18 samples are taken from each products and average viscosities are measured as 10.57 and 10.51. It is known that the standard deviation of both products are 0.1. If you test the claim at 0.05 what would be the test statistics. ======================================================================================================== The length of a day (X) and the electricity usage(Y) for that day recorded. Measuremenst...

A researcher claimed that less than 20% of adults smoke cigarettes. A Gallup survey of 1016...

A researcher claimed that less than 20% of adults smoke cigarettes. A Gallup survey of 1016 randomly selected adults showed that 17% of the respondents smoke. Is this evidence to support the researcher’s claim? (a) What is the sample proportion, ˆp, for this problem? (b) State the null and alternative hypothesis. H0 : p = H1 : p < Note that you should have written the same number in the null and alternative hypotheses. This is the value that the...

In November 2012, a research study claimed that less than two-thirds of U.S. adults thought that...

In November 2012, a research study claimed that less than two-thirds of U.S. adults thought that President Obama would keep U.S. safe from terrorists during his second term. In a random sample of 1,009 adults, 655 stated that they believed this. Test the study's claim at 5% significance that less than two-thirds (67%) of U.S. adults thought that Obama would keep the U.S. safe from terrorists during his second term. A. Step 1: Determine the Hypotheses B. Step 2: Collect...

QUESTION 14 If the price received by a producer is less than average variable cost in...

QUESTION 14 If the price received by a producer is less than average variable cost in the short run, then the firm A. is earning zero economic profits B. is earning positive economic profits C. should continue to produce in the short run D. should shut down immediately 5 points QUESTION 15 The short-run price elasticity of demand for gasoline in the US is roughly equal to -0.25, which tells us that A. the short-run demand for gasoline is...

Consider the probability that less than 14 out of 157 people have been in a car...

Consider the probability that less than 14 out of 157 people have been in a car accident. Assume the probability that a given person has been in a car accident is 11%.

14. Claim: The average cost to repair a smart phone is less than $100. Test at...

14. Claim: The average cost to repair a smart phone is less than $100. Test at α = 0.1. Data: 7 smart phone repairs are chosen at random. The average of these is $95.56, with a standard deviation of $20. (a) Are these data statistically significant evidence to support the claim? (b) Are these data statistically significant evidence to refute the claim?

Describe the difference of emphysema and bronchitis for not less than 10 sentences.

Write a paragraph for each question no less than 4 sentences, and no more than 10...

Write a paragraph for each question no less than 4 sentences, and no more than 10 sentences. Why is responsibility retained by nurses when tasks are delegated? What are the five individual power sources? Provide an example of each. Why is positive reinforcement such a powerful motivator? How does leadership differ from power? Can a leader be effective without power?

(b) A light bulb manufacturer requires no more than 10% defective light bulbs if the manufacturing...

(b) A light bulb manufacturer requires no more than 10% defective light bulbs if the manufacturing process is to be considered working. Assuming the manufacturing process is producing only 10% defectives, what is the probability that a sample of 20 randomly selected light bulbs will contain exactly 2 defective light bulbs? Suppose the reliability of the manufacturing process is unknown. In a random sample of 10 light bulbs 5 defectives are found. Based on this result, the manufacturer wants to...

Question