In a sample of 600 Ottawa families, it is found that 360 rent their dwellings while 240 own their homes. Find a 95% confidence interval for the proportion of renters.

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A: sample mean  x=∑xi1nn x=(69+74+75+70+72+73+71+73+68)9 x=6459 x=71.67 Sample Variance s2=∑xi-xn-1…

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A: Given: Significance level α = 0.01 Formula Used: Test-statistic χ2 = ∑(O-E)2E

Q: Directions. Test the significance of the following correlation coefficients. 1. 0.62 2.-0.77 3.…

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Q: How many students should be sampled in order to be 90% confident in estimating the proportion in…

A: Given that  Margin of error =E =0.10 90% confidence.

Q: a. In 100 workers, there are 30 men and 70 women. The average monthly income form men is 32,000, and…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: FIND P VALUE, X^2, DF ( DEGREE FREEDOM )

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Q: (Simplify your answer.) (Simplify your answer.)

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Q: The lifetimes in hours of two brands of batteries follow normal distributions with means x, y…

A: Solution is given in image uploaded below Thanks!

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Q: A sample is selected from a population with µ = 46, and a treatment is administered to the sample.…

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Q: Hi, What do I need to change so I see eight bars instead of only 7?

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Q: Jacy and Bella began arguing about who did better on their tests, but they couldn't decide who did…

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Q: The tread life of tires mounted on light-duty trucks follows the normal probability distribution…

A: We have given the following information. Mean = 60000Standard deviation = 4000Sample size n = 4

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Q: Statistical Inference for Difference in Population Proportions. Required data conditions [Mark one…

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Q: 1. Are today's college graduates willing to work long, hard hours on the job? Suppose the true…

A: It is given that n =10 and p=0.90.

Q: The items produced by a manufacturer have a probability equal to 0.3 of being defective. For a…

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Q: 8. It is known that 25% of married women have high blood pressure. It is suspected that the…

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Q: Intercept Pulse before marching Coefficients 21.9 Standard Error 8.15 t Stat 2.69 P-value 0.00658…

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Q: Find the equation of the regression line for the given data. Then construct a scatter plot of the…

A: Given data is x 1 1 2 4 4 5 y 38 45 52 47 65 67

Q: 7. Name 2 types of censoring that can occur during follow-up in a cohort study or clinical trial.…

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Q: If a variable is normally distributed with a mean of 30 and a standard deviation of 6, what is the…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

Q: Scores on a test are normally distributed with a mean of 78 and a standard deviation of 6. A student…

A: Given: Mean μ=78 Standard deviation σ=6 A student is selected at random.

Q: Watch your cholesterol: The mean serum cholesterol level for U.S. adults was 195, with a standard…

A: Given that.   X~N( μ , ?^2 )   μ=195    , ?=34   Z-score =( x - μ )/?

Q: b) Explanation: Let we should replace the bulb in X hours, if we want not more than 2% of the bulbs.…

A: Solution-: Given: μ=500,σ=50 We want to find x value such that, P(X≤x)=2%

Q: Which of the following is TRUE? I. II. |||. O a. O b. O c. O d. In a good regression model, the…

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Q: J 1 When interpreting F (9, 29) = 4.78, p > 0.05, how many subjects were tested in this simple…

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Q: (d) What percentage of the data is between 7.3 kg and 11.7 kg? (w) What percentage of the data is…

A: As you want we find only d and w From given data: Mean μ= 9.5 kg, Standard Deviation σ= 1.1 kg.

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

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

A: It is given that  Sample mean, x̄ = 109 Sample standard deviation, s = 10   Note: According to…