In 1995, the proportion of all mutual funds that beat their benchmark indices was .42. In 2002, a random sample of 200 mutual fund, it was found that 74 beat their benchmark indices. a) At the 1% level of significance, test to see if the proportion of funds beating their benchmark indices has decreased since 1995. b) What is the p-value?

In 1995, the proportion of all mutual funds that beat their benchmark indices was .42. In 2002, a random sample of 200 mutual fund, it was found that 74 beat their benchmark indices. a) At the 1% level of significance, test to see if the proportion of funds beating their benchmark indices has decreased since 1995. b) What is the p-value?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 1GP

See similar textbooks

Related questions

Q: Find the value that is one standard deviation below the mean

A: We have given that the data are the distances between a sample of 20 retail stores and a large distr...

Q: Given a standardized normal distribution (with a mean of 0 and a standard deviation of 1), complete ...

A: Let Z be the random variable from standard normal distribution with mean = 0 and standard deviation ...

Q: For a hypothesis Ho: uS 40, Ha: > 40, if the cumulative probability that corresponds to the test sta...

A: We have given that, H0 :μ≤40 versus Ha :μ>40 And Z-statistic = 0.9871 Then, We wil find p- valu...

Q: Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval...

Q: a. What is the probability that Z is less than 1.06? The probability that Z is less than 1.06 is. (R...

A: Let Z denote the Std. Normal distribution i.e N(0,1) Note : According to our guidelines we are solvi...

Q: Assume that, using 65 observations of the time series x you estimate the AR(2) model, x 0.2+0.32.x a...

A: From the given information, xt=0.2+0.32xt-1+0.41xt-2+ut There are 65 observations for the time serie...

Q: According to Facebook’s self-reported statistics, the average Facebook user has 130 Facebook friends...

A: We have given that Population mean =130 Sample size n =45

Q: Does the relationship between the independent variable and the dependent variable changeas a functio...

A: Statistical relationship between two variables is referred to as the correlation.

Q: You work for a marketing firm that has a large client in the automobile industry. You have been aske...

A: Given data you work for a marketing firm that has large client. A margin of error 0.015 is given at ...

Q: Calculate the coefficient of skewness from the following data : Mid-point : Frequency : 15 12 20 18 ...

Q: For the Value at Risk model, which is false? A. It has been criticized for ignoring the existence o...

A: In this question multiple option is available We need to find which statement is false

Q: Two cards are drawn at random from an ordinary deck of 52 playing cards one at a time with replaceme...

A: Two cards are drawn at random from an ordinary deck of 52 playing cards one at a time with replaceme...

Q: Assume the random variable X is normally distributed with mean p = 50 and standard deviation o = 7. ...

Q: A college admissions officer sampled 119 entering freshmen and found that 50 of them scored less tha...

A: Let X be the number scored less than 525 n be the sample size Given x=50, n=119, level of signifi...

Q: Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval...

A: Given that n =227 ,x =129 Find the 95% confidence interval ? < p < ?

Q: A random sample of 12-ounce milkshakes from 14 fast- food restaurants had the following number of ca...

A: For the given data perform confidence interval for mean

Q: sotopes Ag107 to Ag. Its mean is 1.076, and measurements m sample of observed isotopic abundance rat...

A: *Answer:

Q: In Table 5 of Unit 3, data were given on the month of death (January = 1, February = 2, ..., Decembe...

A: Chi-square goodness of fit The Chi-square goodness of fit test is a statistical hypothesis ...

Q: Calculate the weighted price index from the following data : Materials Units Quantity required Price...

Q: Assume that you want to predict Company Performance based on the linear effects of Trust and Commitm...

A: Regression Analysis: Regression analysis is a statistical test that is used to determine the relatio...

Q: 2. The nutritionist also wants to detemine if there is a difference in the average weight loss betwe...

A: T test is used to measure the mean significance between the sample and population. If the assumption...

Q: A researcher wishes to estimate, with 90% confidence, the population proportion of adults who eat...

A: In this question given that A researcher wishes to estimate, with 90% confidence the population pr...

Q: Carry out the hypothesis test for the mean of a normally distributed population given the following ...

Q: Is the variable categorical or quantitative? Categorical (Qualitative) Quantitative (Numerical) inf...

A: We have given that Sample size n =13 liters Population mean μ =100 liters Sample mean =85.7 liters ...

Q: NASDAQ stands for a) National Act on Securities, Derivatives, and Quotations. b) National Act on Sto...

A: We need to find the full form of NASDAQ.

Q: The prime Minister of a small Caribbean Island stated that 95% of the population was vaccinated from...

A: Given data The prime minister of a small Caribbean island randomly selects 300 citizens and found th...

Q: A barangay chairman claims at least 85% of the residents in his barangay have household pets. To tes...

Q: For each distribution, simulate a sample of N = 200 and compute empirical mean, empirical standard d...

A: Given information: n = 200 N0.5,4 As per guidelines we will only answer the first three subparts, pl...

Q: The average American consumes 100 liters of alcohol per year. Does the average college student consu...

A: Given that, The average American consumes 100 liters of alcohol per year. A researcher surveyed ...

Q: Question 13 How many 10 letter arrangements of 10 letters in the word statistics are possible?

Q: Deduce the first four moments about mean of Poisson distribution, from those of binomial distributio...

Q: One graph in the figure represents a normal distribution with mean u = 16 and standard deviation o=2...

A: Given For graph A mean=12 For graph B mean=16

Q: Assume that different groups of couples use a particular method of gender selection and each couple ...

Q: What is the variable being examined for individuals in the population(s)? Amount of alcohol consume...

A: A variable is any characteristics, number, or quantity that can be measured or counted. In this ques...

Q: If it is given that E fx = – 100, E fx = 400, E fx° = - 1000, 2 fx^ = 5000 and %3D N= 10, find the f...

A: Moments are used to understand the distribution of the data set. It is related to the deviation of d...

Q: A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food resta...

Q: Identify the null and alternative hypothesis for the given scenario: Students earning a Master's deg...

Q: A car hiring company has 12 Tata sumos and 8 Qualis. If 5 of these cars go to workshop for repairs a...

Q: Determine whether the distribution is a discrete probability distribution. P(x) e 0.18 1 0.26 0.32 0...

A: Let X be the random variable having probability distribution is, X P(X = x) 0 0.18 1 0.26 ...

Q: In arranging books, 3 Algebra books, 5 Geometry books and 4 Differential Equation books on a shelf, ...

A: Given

Q: Statistics is the interpretation of data. True O False

A: In this question given that statement "Statistics is the interpretation of data" Find out whether th...

Q: If the joint p.d.f. of the random variables X, Y is f(x, y) = 2-x-y, 0<x<1; 0<y S1 Find V(X), V(Y) a...

Q: 120 students from University of Los Banos who chose engineering as their college program were survey...

Q: A metal bolt is to be inserted into a hole. A random sample of n =16 parts is selected, and the hole...

A: Givenn=16s=0.008confidence interval = 95%

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll,...

Q: A car salesperson offers you a car at the price of $22,895. You look up the mean sales price for tha...

A: We have given that the random variable X that is sales price. Here, X = 22895 Mean = 21900 and stand...

Q: The nutritionist wants to determine if the satisfaction levels (measured from 1-10, 10 being the hig...

A: From the R output we see that, p value for female by Shapiro-Wilk normality test is 0.2748 and that ...

Q: Testing: Ho:µ 48.2 Your sample consists of 23 values, with a sample mean of 49.6. Suppose the popul...

A: As per our guidelines we are supposed to answer only 3 sub-parts of any question so I am solving fir...

Q: A bag has six balls labeled A, B, C, D, E, and F. One ball will be randomly picked, and its letter w...

A: Given Bag contain 6 balls

Q: (a) Pulse Rates for Women Frequency 60-69 13 70-79 14 80-89 90-99 100-109 1 110-119 120-129 Pulse Ra...

A: Graphs are used to visualize the data set. It used for easy understanding of the data set. Graphs ar...

Question

2) In 1995, the proportion of all mutual funds that beat their benchmark indices was .42. In 2002, a random sample of 200 mutual fund, it was found that 74 beat their benchmark indices.

a) At the 1% level of significance, test to see if the proportion of funds beating their benchmark indices has decreased since 1995.

b) What is the p-value?

Expert Solution