An investmont analyst wants to establnh whether there is a change in the moan rate of rotum for 6 types of vestmonts The analyst selocted a samle of 154 and condacle NOVA lest that is shown as follows Variation Hotwoen MS 267 Treatment) within (Eror) tal 739

Q: The number of students, in a class of 35, who improve their score from the first midterm to the…

A: Since we know that discrete variable : A variable which takes particular value , generally integral…

Q: describe what is measured by the standard error of M?

A: We have to describe what is measured by the standard error of M

Q: Give give 5 examples of type I error inside your home.

A: Type 1 error  Probability of rejecting the null hypothesis when it is true

Q: Use the formula to find the standard error of the distribution of differences in sample means,…

A: The answer is attached below,

Q: On April 20th, 2010, an explosion and fire on an oil rig operated by British Petroleum (BP) caused…

A:

Q: what would be a good hypothesis for calculating the average speed for cars

A: Introduction Hypothesis is an assumption that is being tested.

Q: the margine of error is always greater than or equal to the standard error?

A: In estimating from a random sample, the difference between an estimator and a parameter can be…

Q: Last year, 58% of butterflies in NC were monarchs.  We hypothesize that the proportion changed this…

A: From the provided information,Last year, 58% of butterflies in NC were monarchs.

Q: At the current rate of consumption, the current U.S. coal reserves will last approximately 258…

A: We have to find type of statistics.

Q: 10. We want to test a claim that the proportion of people with type 2 diabetes is higher than 0.09.…

A: Given,n=400x=45p^=xnp^=45400=0.1125H0:P=0.09H1:P>0.09

Q: Question is describe a type I error

A: In statistical testing type, I error is very important in rejection of the true null hypothesis  or…

Q: Describe about mean square between.

A: In ANOVA, “SS” stands for “sum of squares”, “df” stands for degrees of freedom, F is for the test…

Q: The tourist bureau of the Caribbean Islands surveyed a sample of 5 United States tourists as they…

A: Let X denote the number of days spent on visit.  Given that n = 5

Q: an example of the errors that can occ

A: For almost any experimental study where statistical procedures are applied to a collection of…

Q: ) 5.2°F per month

A:

Q: A researcher wants to know if feelings of general happiness vary by race? Their obtained frequencies…

A: For the given data Use chi square test

Q: Identify the methods of computing dispersion?

A: The objective of the question is to identify the various methods used in statistics to compute…

Q: How standard deviation affects the power?

A: With increase in standard deviation, The observed point will be located far away from the mean.…

Q: The average American gets a haircut every 37 days. Is the average smaller for college students? The…

A: Given information- Population mean, μ = 37 days Sample size, n = 15 We have given the data below…

Q: The central limit theorem is vital in statistics for two main reasons—the normality assumption and…

A: The central limit theorem states that the sampling distribution of any distribution, if you do it so…

Q: Explain cumulative error?

A: Introduction Statistics is a discipline which involves collection of the data, organizing and…

Q: standard deviation

A: If the random variable X follows a distribution with mean = μ and standard deviation = σ Then the Z…

Q: A sample of blood pressure measurement is taken for a group of adults in those values are listed…

A: For the provided data Let us denote Systolic measurement by X and Diastolic by Y

Q: Find the standard deviation of te average temperatures recorded over a five-day period last summer:…

A: Solution :  We need to compute the  population standard deviation . These are the sample data  that…

Q: doctor in the oncology department of a hospital surveyed the breathing rateof cancer patients. The…

A: The empirical rule should be used in this problem.

Q: please find the test statistic find the p-value for the found test statistic

A: Given :    Sample size = 1051 Level of significance = 0.05  X = number of students who use illegal…

Q: It showed incorrect

A: From the provided information, Profit/Loss (x) Probability P(x) $40,000 0.06 $30,000 0.20…

Q: Are births evenly distributed across the days of the week?  A random sample of 700 births from local…

A: Given : Week of the day Birth Sunday 84 Monday 110 Tuesday 124 Wednesday 104 Thursday…

Q: Is the number of runs scored by a baseball team during a season quantitative and discrete?

A: Discrete random variable: A discrete random variable takes the countable number of real values. This…

Q: The standard deviation never been negative because it represents the Speed O Distance O Time Average…

A: We have to find why standard deviation can never be negative.

Q: The Michelin tires in average will last for 60000 miles. A technician claims that the deviation of…

A: Given data The Michelin tires in an average will last for 60000 miles. The standard deviation is…

Q: normally distributed with mean and standard deviation 15. domly selected person has an IO between…

A: Given data,Mean μ=100sd σ=15P(100<X<115)=?

Q: The relative frequency associated with a particular class in the population is the fraction of…

A: Relative frequency is the ratio of the frequency of a particular event to the total frequency.

Q: Define Type I and Type II error with example?

A: To define Type I error and Type II error.

Q: Suppose that the average number of miles driven by a student is 15,000 and the standard error is…

A: Here sample size is not given and we know standard error and hence use z statistic to construct…