7.56 A random sample of size n = 144 yielded p = .76. a. Is the sample size large enough to use the methods of this section to construct a confidence interval for p? Explain. b. Construct a 90% confidence interval for p. c. What assumption is necessary to ensure the validity of fidence interval?

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Q: 2. A sample of 38 data observations has a sample mean 0.0328. If an experimenter wishes to use a…

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Q: 20. The Associated Press (October 9. 2002) reported that in a survey of 4722 American youngsters…

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Q: 3. Assuming o is known, which of the following would most likely result in the widest confidence…

A: Introduction: It is required to identify the condition from the four given conditions, that would…

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Q: 5. The Roper Organization conducted a poll of 2000 adults and found that 382 regularly listen to an…

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Q: A random sample of records of 10 night shifts at the emergency section at the Nairobi hospital gave…

A: A confidence interval for a mean is a range of values that is likely to contain a population mean…

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A: Here, mean is 63.36 and standard deviation is 4.62. We will use one sample t confidence interval.

Q: 4.)  A simple random sample of size n is drawn from a population that is normally distributed.…

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Q: 5) Consider a confidence level of 87%, let E = 0.02 and p = 0.42. Find the sample size n. %3D

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Q: A particular brand of trans-fat butter was analyzed to determine the level of polyunsaturated fatty…

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Q: A sample of 20 observations shows a sample mean of 290 and a sample standard deviation of 30.…

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Q: What is the value of tα/2 for a sample of size n=39 at the 90% level of confidence?

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Q: 3) An electrical company manufactures a plastic connector module that have depths that is…

A: Given,sample size(n)=75mean(x¯)=0.310standard deviation(σ)=0.0015α=1-0.95=0.05α2=0.025Z0.025=1.96…

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Q: A sample of 18 observations taken from a normally distributed population produced the following dat…

A: Solution  given data, 28.1 27.1 25.2 25.5 31.2 23.1 26.2 24.1 28.4 37.1 23.9 28.9 27.6 25.5 27.3…

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Q: A student was asked to find a 95% confidence interval for widget width using data from a random…

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Q: Consider two independent random samples with the following results: n, = 573 P = 0.63 %3D n2 = 604…

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Q: 1. The 2006 General Social Survey contains information on the number of hours worked by a respondent…

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Q: Give the margin of error for the 90% confidence interval for µd = µ1 – H2

A: The differences are 4, 6, 2. The mean is, d¯=∑dn=4+6+23=123=4 The standard deviation is,…

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Q: Number 6 Please

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A: Given Information: Sample size n=152 students Out of which x=85 support banning plastic water…

Q: a researcher was interested in comparing the amount of time watching television by women and by men.…

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Q: Compute the following sample sizes. Use the appropriate formula.  If necessary, round to the nearest…

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.