Suppose that 2 out of every 10 homeowners in the state of California has invested in earthquake insurance. Suppose 20 homeowners are randomly chosen to be interviewed. USE SALT (a) What is the probability that at least one had earthquake insurance? (Round your answer to three decimal places.) (b) What is the probability that four or more have earthquake insurance? (Round your answer to three decimal places.) (c) Based on the empirical rule within what limits would you expect the number of homeowners insured against earthquakes to fall approximately 95% of the time? (Round your answers to the nearest whole number.) to

Q: (a) If the true mean is .9560 with a standard deviation of 0.0050, within what interval will 95…

A: Mean = 0.956 sd = 0.005 n = 36

Q: a two-tailed test at the a = 0.1 ppropriate rejection regions. (Round your answers to two decimal…

A: Given a two-tailed test at the alpha = 0.1 Z critical value for two tailed test = ±1.645...........…

Q: Question Help ▼ A researcher wishes to estimate, with 99% confidence, the population proportion of…

A: Given data,E=5%=0.05z-value at 99% confidence is Zc=2.576

Q: 4. Unlocked for sale The "sold" listings on a popular auction website included 21 sales of used…

A:

Q: I need help on these parts of the questions asap

A:

Q: Let s= (-3,3), and t= (2, - 6). Perform the operations indicated. Write the vector answers in the…

A: Topic:-  vector algebra

Q: A random sample of n = 1,000 observations from a binomial population contained 381 successes. You…

A: Given a hypothesis test is conducted to verify if p<0.4 The null hypothesis uses these symbols to…

Q: Consider the following situation. a right-tailed test with a = 0.1 Find the appropriate rejection…

A: Given : Consider the following situation. a right-tailed test with a = 0.1

Q: Random samples of size n were selected from a normal population with the means and variances given…

A: Given : n=6 Mean=115 Standard deviation =1

Q: If a drop of water is examined under a microscope, the number x of a specific type of bacteria…

A:

Q: se that the Achilles tendon diameters in the general population have a mean of 5.97 millimeters…

A:

Q: In a certain population, 16% of the people have Rh-negative blood. A blood bank serving this…

A: Givenp=0.16sample size(n)=95Let "x" be the no.of donorss are…

Q: How does Alex Smith, quarterback for the Kansas City Chiefs, compare to Joe Flacco, quarterback for…

A:

Q: 8. That tall? The graph displays the cumulative relative frequency of the heights (in inches) of…

A:

Q: All confidence intervals have the form: estimate± margin of error. estimate± standard error.…

A: We have to find correct answer for both questions....

Q: Calculate L6 for f(x) = v7x + 2 over [1,3]. (Give your answer to three decimal places.)

A: The given function is fx=7x+2 and the interval is 1,3. Obtain the length of the rectangle as…

Q: Calculate R3 and L3 for f(x) = x² – 4x + 5 over [1,4]. (Give your answers as whole or exact…

A: The give function is fx=x2-4x+5 and the interval is 1,4. The length of the rectangle is as follows:…

Q: A random sample of n = 1,200 observations from a binomial population produced x = 694 successes. You…

A: Givensample size(n)=1200x=694

Q: A random sample of n = 1,000 observations from a binomial population contained 378 successes. You…

A: In testing of hypothesis, there are two hypotheses - null and alternative. These two hypotheses…

Q: In a report concerning the rise of automation in the United States, 56% of the participants…

A: From given data we have  n=450 p^=0.56

Q: A population consists of N = 4 numbers: 10, 14, 19, 22 with a mean of μ = 16.25. A random sample of…

A:

Q: A particle starts by moving to the right along a horizontal line; the graph of its position function…

A: Given: A particle starts by moving to the right along the horizontal line; the graph of its position…

Q: The quality department at an electronics company has noted that, historically, 92% of the units of a…

A: Given that

Q: Ground beef is packaged in small trays, intended to hold 1 pound of meat. A random sample of 30…

A: Given information Hypothesized mean µ = 1 pound Sample size (n) = 30 Mean x̅ = 1.02 pounds Standard…

Q: Most coffee drinkers take a little time each day for their favorite beverage, and many take more…

A:

Q: The number x of people entering the intensive care unit at a particular hospital on any one day has…

A: a) Suppose a random variable X defines the number of people entering the intensive care unit at a…

Q: The diameters of Douglas firs grown at a Christmas tree farm are normally distributed with mean of 5…

A: Given information- Population mean, µ = 5 inches Population standard deviation, σ = 1.5 inches Let,…

Q: Use Laplace transforms to the following dy а. 2 + y = 4 where y(0) = 2 dt d'y dy b. +5. +6y=2 where…

A: