A sample of 108 mortgages approved during the current year showed that 41 were issued to a single-earner family or individual. The historical percentage is 33 percent. At the .05 level of significance in a right-tailed test, has the percentage of single-earner or individual mortgages risen?   (a-2) Calculate the test statistic. (Round intermediate calculations to 2 decimal places. Round your answer to 4 decimal places.)

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A: Given observed frequency(O) table : Expected frequencies and Test statistics can be calculated as…

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A: Here the given information is A publisher reports that 65% of their readers own a laptop. A…

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Q: Claim: Most adults would erase all of their personal information online if they could. A software…

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Q: 20. Given that 3.27 = 1.808 and 32.7 = 5.718 %3D without using a calculator, evaluate (a) V0.327 (b)…

A: By using the result of power indices of surds we solve this problem in next step.

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A: The formula for the sample size is as follows: Here,zα/2 is the critical value at 95% confidence…

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A:

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A: Given information- Population proportion, p = 0.57 Sample size, n = 60 Sample proportion is- We…

Q: that the

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Q: Use the test statistics that you found to fnd the p-value (Round answer to four decimal places).

A: Given:population proportion p = 0.054sample size n = 400number of children with abnormalities in the…

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A: Denote p as the true proportion of readers, who own a laptop. It is reported that 22% of their…

Q: If I were to calculate the z-score for your final grade in this class, which z-score would you least…

A: If I were to calculate the z-score for your final grade in this class, which z-score would you least…

Q: june, an investor purchased 250 shares of orcales(an information technology company) stock at $23…

A: We have given that data  weight w1=250 , w2=360 and w3=510 Weight average x1=23, x2=23 and x3=29

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A: Actually you have seen the table for for left tailed side i.e. P(Z < -1.15)  But we have to solve…

Q: Calculate the test-statistic, † with the following information. ni = 55, ž1 = 2.89, s1 = 0.32 n2 =…

A: Given,n1=55 , x1=2.89 , s1=0.32n2=30 , x2=3.3 , s2=0.43

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A: Correlation coefficient(r)=0.909

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A: z-test for one-proportion A one-proportion z-test is a statistical method for hypothesis testing…

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A: It is required to predict the percentage of people without health insurance in 2020.

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A:

Q: McCallister conducts a study to examine the relationship between the amount of time kids spend home…

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Q: Find the p-value for the following conditions. Explain. a. Left-tailed; z stat = -1.62 b.…

A:

Q: The market share analysis company, Net Applications, monitors and reports on the use of the Internet…

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Q: A hospital director is told that 55% of the emergency room visitors are insured. The director wants…

A: Given: n= 320 ,x= 160 p= 0.55 ,significance level(∝)= 0.01 p̂= 160 / 320 =0.5

Q: In the past, 70% of the tourists who visited Dubai went to see Burj Khalifa. The management of Burj…

A: From the provided information, In past, 70% of the tourists who visited Dubai went to see Burj…

Q: Scatterplot (a) Scatterplot (b) Scatterplot (c) Scatterplot (d)

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A: It is given that Sample size n = 245 Number of cell phone owners with Android phone, X = 106

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A: Introduction :-  We have to explain in this context what the 7% represents in the given context.

Q: what z value correlates to 98.96% under  the curve

A: If Z represents standard normal distribution, then we need to find the value z such that…

Q: P(Z = 0.76) %3D O 0.71 0.22 J0.29 O 0.78

A: Note that Z (standard Normal) is  a continuous random variable.

Q: 1. Find the absolute and percent relative uncertainty. a. 6.2 (±0.2)-4.1 (0.1) = ? b. 9.43 (+0.05) x…

A:

Q: In a recent year, a poll asked 2023 random adult citizens of a large country how they rated economic…

A: Answer: Using the given data, sample size (n) = 2023 Sample proportion (P^) = 21% = 0.21 Population…

Q: A researcher claims that at least 10% of all football helmets have manufacturing flaws that could…

A: From the provided information,

Q: Find the P-value (to 4 decimals) for a x test with d. f. = 10 and STS x = 13 if the test is: %3D a.…

A: The degrees of freedom are d.f = 10 And the value of test statistic is = 13

Q: A hospital director is told that 30% of the treated patients are uninsured. The director wants to…

A: Solution-: Given: x=30,n=120,P0=0.30 We want to find the value of the test statistic

Q: A survey of 100 senior citizens was undertaken and it was found that 9 of them had the flu vaccine…

A: given data clim : p < 0.12n = 100x = 9α = 0.10p^ = xn = 9100 = 0.09

Q: The cost per item at a supermarket follows an exponential distribution. There are many inexpensive…

A: Given: The mean cost per item is μ=4.5

Q: Joshua went to a doctor's appointment yesterday. He was weighed and the paperwork said that his…

A: Given: Joshua went to a doctor's appointment yesterday. He was weighed and the paperwork said that…

Q: A survey of 100 senior citizens was undertaken and it was found that 9 of them had the flu vaccine…

A:

Q: A publisher reports that 80% of their readers own a laptop. A marketing executive wants to test the…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: A sample of 900 computer chips revealed that 68% of the chips fell in the first 1000 hours of their…

A: Solution is given below

Q: A local road was designed to handle a daily mean of 200 Ccars. The local city council is concerned…

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Q: What is the predicted percentage of people without health insurance in 1998? Round your result to…

A: It is required to predict the percentage of people without health insurance in 1998.

Q: ABC company has recently experienced a sharp decline in its stock price. Its current (time 0) stock…

A: Let t denote the time point.The current stock price is Pt=P0=$42.65The dividend (Dt) payed at t=0 is…