A triangular distribution has p.d.f. f(x) = k(1- (xl) Sketch the p.d.f., and evaluate the constant k. for -1 < x < 1.

Q: The margin of error is

A: here confidence level = 98% sample standard deviation  = 6 sample size = n = 9 df = n-1 = 8

Q: Using the data below, suppose we focus on the proportions of patients who show improvement. Is there…

A: Suppose p1 and p2 are the true population proportion of patients who show improvement between…

Q: Solve the following problem. Show your solution. 1. Find the probability that the number of days a…

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

Q: A researcher wanted to determine whether certain accidents were uniformly distributed over the days…

A: A researcher wanted to determine whether certain accidents were uniformly distributed over the days…

Q: The weights in grams of a sample of 24 walnuts are shown. If the mean is 19 grams, and the standard…

A: n=24 Mean=19 Standard deviation=2.45

Q: Salma recently switched her primary doctor to one specializing in caring for elderly patients. On…

A: The question is about hypo. testing Given : Popl. mean sys. blood press among elderly females ( μ )…

Q: Body weights of 18 diabetics expressed as a percentage of ideal (defined as body weight divided by…

A: Stem and leaf plot.   The stems are listed in the left side of the vertical line and these numbers…

Q: It has long been stated that the mean temperature of humans is 90.0 T.T ever, two less than 98.6°F.…

A: It has long been stated that the mean temperature of humans is μ=98.6 F. They measured the…

Q: A certain auto dealer only sells cars that are between 4 and 13 years old. Their ages follow a…

A: x = age of carX~U(4,13)uniform distributionP(x&gt;9) = ?

Q: Student Lungani Nsika Thembekile Mduduzi ABCD A. Variable B. The body temperature of a patient…

A: Interval Scale variable :  The variables which doesn't consist true zero,  ( Named + order + equal…

Q: "robability =

A: It is given that man claims he has extrasensory perception (ESP). The fair coin is flipped 28 times…

Q: An investigation was carried out to study possible consequences of the high incidence of head…

A: The test is to check whether the means for Hopkins score are not the same for the three student…

Q: COUNTING TECHNIQUES - Statistics and probability 1) How many commissions of 3 people can be formed…

A: We have to form commissions of 3 people from a group of 10 people. i.e. r=3 and n=10 The combination…

Q: 30% of students take Physics 101 and 20% take Math256. Of the students who take Physics 101, 25%…

A: PStudents takes physics101=0.30PStudents take Math256=0.20PStudent takes Math 146  GIVEN  he takes…

Q: An investigation was carried out to study possible consequences of the high incidence of head…

A: The mean of the sample mean is 30.1809. The test is to check whether there is sufficient evidence to…

Q: Has the Hint been considered while answering the questions.   Or it does not change or influence…

A: Has the Hint been considered while answering the questions? Or it does not change or influence the…

Q: Suppose the equation of the regression line for the number of emails a person recieves at a…

A: Answer:- Given, The equation of the regression line for the number of emails a person recieves at a…

Q: What type of distribution does X follow? A. Uniform B. Bernoulli C. Exponential D. Geometric E.…

A: Probability of computer user clicks on the online ad of company ( p ) = 0.22 X : No. of independent…

Q: The following data represents the percentage of people without health insurance for a sample of the…

A: given People without insurance 8.6 10.6 13 15.5 18.1 19.4 22.2 9.2 10.9 13.3…

Q: Given that X is a random variable having a Poisson(2) distribution, compute the following: (a) P(X=…

A:

Q: Please no written by hand solutions 70 Australian households were randomly selected and surveyed.…

A: Answer:- According to the given information,  n = 70 X = 45  Confidence level = 95% = 0.95  So,…

Q: what is the twosided alternative hpothesis fo this scenario

A: μ=50

Q: Customers arrive at a movie theater at the advertised movie time only to find that they have to sit…

A: Here the given information is Customers arrive at a movie theater at the advertised movie time only…

Q: Davis Stores sells clothing in 15 stores located around the southwestern United States. The managers…

A: Consider the given regression results: Here, Cost is the dependent variable (y) and Revenue is the…

Q: Find the range for the given data set, 44,56,76,98,37,22,38,46,11,39

A: Answer:-  Given data set is,  44,56,76,98,37,22,38,46,11,39  Using formula,  Range = Maximum value -…

Q: First time researchers, like students, are allowed to use 10% as allowable error, while in the…

A: The allowable error in research refers to the maximum amount of error that is considered acceptable…

Q: Can a normal distribution always be used to approximate a binomial distribution? Explain your…

A: The random  variable X satisfies the following physical conditions of binomial distribution: Each…

Q: A friend of mine is going to offer a party. His current stock of wine includes 8 bottles of…

A: Number  of bottles  in Zindadel = 8 Number of bottles  in Merlot = 10 Number of bottles  in Caberent…

Q: A local health clinic surveys 50 patients about their water drinking habits. It found the data is…

A: n=50 Mean=62 Standard deviation=5.2 Confidence level=95%

Q: Prof. Johnson conducts a hypothesis test on whether the proportion of all UBC students who bike to…

A: given H0:P=0.30 against Ha: P≠0.3. p-value for this test is =0.01.

Q: The following table shows the average life expectancy, in years, of a child born in the given year.†…

A: The predictor variable is t, the number of years since 2015, that is, t = Year – 2015. The response…

Q: The height of women ages 20-29 is normally distributed, with a mean of 64.4 inches. Assume o = 2.4…

A:

Q: A pet food company wants to know the number of pets owned by adults ages 21 to 70. The frequency…

A:

Q: (c) In formulating hypotheses for a statistical test of significance, the null hypothesis is often…

A: (c) In formulating hypotheses for a statistical test of significance the null hypothesis is often A.…

Q: Find the percentage of the total area under the standard normal curve between the following…

A: The given z-scores are z=1.44 and z=2.83.

Q: Determine whether the data set is a population or a sample. Explain your reasoning. The age of each…

A: It is needed to define whether the given data set is a population or a sample.

Q: A machine uses electrical switches that are known to have a 3% fail rate for each use. The machine…

A: a) 8 is set of all possible outcomes   b) Here x can take four values that is X=0,1,2,3,4 c) To find…

Q: Find the critical values for each. 1. a/2 for the 90% confidence interval 2. =a/2 for the 92%…

A: As per our guidelines we are suppose to answer only one question kindly post the remaining questions…

Q: Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to…

A: P(c&lt; Z &lt;-1.13) =0.1167

Q: COUNTING TECHNIQUES - Statistics and probability 1). Maria is organizing her bachelorette party…

A: Maria is organizing her bachelorette party with 18 colleagues from work and 15 from the university.…

Q: Complete the table below and solve the expected mean, variance, and standard deviation. Show your…

A: X 0 1 2 3 4 P(X) 0.09 0.19 0.37 0.23 0.12

Q: a) Determine the least squares regression equation for the height of the ball over time.

A: HERE given ,  Time(seconds)  = x Height (feet ) = y  Regression line = y^ = a + bx a = y - intercept…

Q: Individual members of an insured group have independent claims. Aggregate payment amounts for males…

A: The question presents a scenario where individual members of an insured group have independent…

Q: (a) P(X= 1) when X = 2 P(X = 1) = | (b) P(X ≤ 2) when λ = 1 P(X ≤ 2) = (c) P(X> 8) when λ = 4 P(X>…

A: X~pois(ƛ) then pmf of x P(x)= e-ƛ×ƛx/x! : X=0,1,2,... a): p(x=1) if ƛ= 2 b): p(x≤2) if ƛ=1 c):…

Q: If the process is centered, how many DPM would be produced? 11,147 O 7000 O 3,258 14,465 2,078 O…

A:

Q: Find the frequeng Distinoution table grouped Data of ? 16,19,18,13 11,17,11,10 10,18,13,15…

A: Given data in ascending order:- 0, 9, 10, 10, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13,…

Q: An economist studying inflation in electricity prices in 2018 and 2019 believes that the average…

A: Sample size n=9 The population distribution of the paired differences is approximately normal.  The…

Q: A man claims to have extrasensory perception (ESP). As a test, a fair coin is flipped 22 times, and…

A: A man claims to have extrasensory perception (ESP). As a test, a fair coin is flipped 21 times…

Q: ASSIMILATION At two-tailed graph, locate in the T-distribution table the entries for different…

A: The percentile is the measure which separates the entire data set into 100 parts in an equal way. It…

Q: The number of pizzas consumed per month by university students is normally distributed with a mean…

A: normal distribution μ = 9σ = 2