In a survey of 3343adults aged 57 through 85​ years, it was found that 89.2​% of them used at least one prescription medication.   Part 1 a. How many of the 3343 subjects used at least one prescription​ medication?   ​(Round to the nearest integer as​ needed.)   b. Construct a​ 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication.   %

Q: Example 21.8) A marketing manager has to decide be- tween advertising his product on a national…

A:

Q: Example 21.8) A marketing manager has to decide be- tween advertising his product on a national…

A:

Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…

A:

Q: If you obtained all possible random samples of size 6 as above and computed the mean from each…

A: From the above data  If you obtained all possible random samples of size 6 as above and computed the…

Q: Roll eight fair six-sided dice. Find P (0 - 0 - 4 - 0 - 0 - 4).

A: Given information: Rolling eight fair six-sided dice. P1=P2=P3=P4=P5=P6=16

Q: Assume M&M candies are randomly selected and grouped in bags of 40 pieces per bag and that 16% of…

A: Givensample size(n)=40p=0.16Let "x" be the no.of green M&M's in any one…

Q: Webster Chemical Company produces mastics and caulking for the construction industry. The product is…

A:

Q: You'd like to test how strongly two measures of anxiety are associated. You are Generalized Anxiety…

A: The choice of the statistical test is dependent on various factors.

Q: Let X be a Poisson random variable with parameter λ. Show that the probability that X is even is…

A: Given that, X be a Poisson random variable with parameterλ. We need to show that the probability…

Q: TRUE OR FALSE> When using parametric statistics, you are required to have a sample size of at least…

A: Parametric Statistics: This statistics or test are applicable on the data which have a distribution.…

Q: An experiment was performed to compare the abrasive wear of two different coating materials on the…

A:

Q: You measure 23 randomly selected textbooks' weights, and find they have a mean weight of 37 ounces.…

A:

Q: 3 To test, at a 5% level of significance, if the average fill of half-gallon milk containers is 64…

A: For the given data Perform t test for one mean

Q: Example 21.3 A group of volunteers of a service organisation raise money each year by selling gift…

A:

Q: Use the following data to answer A&B.  The test scores for a sample of five randomly chosen…

A:

Q: Create your own example of Likert scale and Grouped frequency distribution using your own data.…

A: Likert Scale Analysis: Consider a class of 50 college students in an esteemed university. The…

Q: probability that the card is a black 9.

A: here given there are total 52 cards in deck  so total no of outcomes for sample space  =  52  n(S) =…

Q: Suppose you use simple random sampling to select and measure 43 watermelons' weights, and find they…

A: Given n=43 Xbar=64 Population standard deviation=13.6 Level of significance=0.01

Q: Use an ANOVA with ? = 0.05 to determine whether there are any significant differences among the…

A: Anova is a type of parametric test and it used to measure the mean significant between more than…

Q: You are using a hypothesis test to make sure a machine will not underfill or overfill 14 oz boxes of…

A: The random variable foreign students follow normal distribution. We have to construct 90% confidence…

Q: e the data and draw a bell shaped curve B. sketch out either a frequency graph or scatter plot C.…

A: Whenever we visualize the data, we need the data so that we can make a plot for it. So, option (a)…

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Given that Confidence level (C) = 95% We don't have any reasonable estimate for the population…

Q: Example 19.1 is 20 against the alternative hypothesis u # 20. Fifteen observations were taken and…

A:

Q: mes required by three workers to perform an assembly-line task were recorded on five randomly Eed…

A:

Q: What is the expected di§erence in birth weight of babies whose mothers have a high school and babies…

A: The given regression model estimates the weight of ew born babies on the basis of factors affecting…

Q: The following scatterplot sh graph. Scatter 4

A: Independent variable (x) Area (in square feet) Dependent variable (y) Acreage

Q: You are assisting the county assessor (whose job is to assess the value of properties for property…

A:

Q: Kim has a strong first​ serve; whenever it is good​ (that is,​ in) she wins the point 85​% of the…

A: Given wins the point 85​% of the time.Whenever her second serve is​ good, she wins the point 40​% of…

Q: ed on and placed on a bookshelf where a time-lapse video camera captured how long (in minutes) each…

A: Given, Duracell Energizer Rayovac 244 231 178 241 240 184 236 236 185 239 243 167 240…

Q: A laboratory technician is interested in the proportion of 1-liter containers used in the lab that…

A:

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Using the…

A:

Q: I am designing an experiment to test whether or not a new drug is effective at changing a variable…

A: In order to design an experiment to test whether or not a new drug is effective at changing a…

Q: Which of the following does not exemplify an alternative hypothesis: A.) High school graduates on…

A: If the statement contains the words less than, greater than or not equal to then these statements…

Q: Suppose x has a distribution with ? = 10 and ? = 3. If a random sample of size n = 71 is drawn,…

A: Solution-: Given: μ=10, σ=3, n=71 We find, (a) μX¯=? , σx¯=? (b) P[10≤<X¯≤12]=?

Q: 18,716 29,004 42,559 30,325 67,231 65,155 21,100 12,473 31,455 27,712 coefficient of determination…

A: Given By using Excel function Install analysis toolpack and then go to Data>>Data…

Q: alyze the relationship between the hourly earnings and years of schooling.                    The…

A: Here we have to calculate prediction error. Prediction error can be defined as difference between…

Q: Four people are running for class​ president: Liz,​ Fred, Sue, and Tom. The probabilities of​ Fred,…

A: Given The probabilities of​ Fred, Sue, and Tom winning are 0.23​, 0.28​, 0.12

Q: State the alternative hypothesis in words and in symbols. Choose the correct answer below. O A. The…

A: Givena baseball team claims that the mean length if its games is 1.9 hours

Q: 4. A single ball is drawn at random from a box containing 12 orange balls, 10 black balls, and 8…

A:

Q: Is the gestational age (time between conception and birth) of a low birth-weight baby useful in…

A: Given that  Is the gestational age (time between conception and birth) of a low birth-weight baby…

Q: The weekly amount of money spent on maintenance and repairs by a company was observed, over a long…

A:

Q: An instructor plots the grade distribution for a practice final exam and determines that the grades…

A: For a negatively skewed graph mean<median<mode.

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 4.5…

A: Let X be the random variable from normal distribution with mean (μ) = 4.5 and standard deviation (σ)…

Q: Q4) A factory manufactures cups. The manager knows from past experience that 5% of the cups produced…

A: Let X be the random variable from binomial distribution with probability (p) = 5% or 0.05 and sample…

Q: question#5 Assume that a sample is used to estimate a population mean μμ. Find the 99.5% confidence…

A: We need to find the 99.5% confidence interval for a sample of size 73 with a mean of 26.5 and a…

Q: How many main effects are in a 3 x 3 factorial design ANOVA? O 2 3 0 9

A:

Q: The number of initial public offerings of stock issued in a Issues, x 424 457 695 500 499 37…

A: Use the Excel and Perform the Regression. Followings are the Steps to perform the Regression 1) Open…

Q: 16 Rick O’Shea asks his campaign manager to obtain a poll with a margin of error of 3 percentage…

A: Given: Margin of error (E) = 0.03

Q: A farmer has a flock of 80 chickens with weights that are normally distributed with a mean of 4.00…

A: Let X be the random variable from normal distribution with mean (μ) = 4.00, standard deviation (σ) =…

Q: Liz just completed a test where her baseline assumtion is that the local paint factory is following…

A: Type 1 error: If the null hypothesis is rejected when it is actually true. Type 2 error: In case of…