Given He: u S 12, for which confidence interval should you reject Ho? (10, 13) B. (11, 14) A C (11.5, 12.5) D. (13, 16)

Q: deviation =19 and determine the required sample size using technology. Then determine if this is…

A: Given : Margin of error, ME = 5 population standard deviation, σ = 19

Q: Directions: Formulate the null and alternative hypothesis in a statement form. Identify whether it s…

A: Solution:  1) Given information: n= 30 Sample size  μ=89 Population mean σ=6 Population standard…

Q: A local school has seven math teachers and seven English teachers. When comparing their mean…

A: Given that  Two groups  Maths and English  Sample for maths =7 Sample for English=7  Which test is…

Q: Given H u> 85 and P-0.003. What decision should be made at the 0.01 level of significance?

A: Given: P=0.003 α=0.01

Q: If a random process, X(t)= A cos wt + Bsin wt is given, where A and B are uncorrelated, zero mean…

A:

Q: Consider the following scatterplot showing the relationship between caffeine intake and job…

A: From the scatter plot it is clear that even for high number of coffee test scores is too low.  When…

Q: From a set of observations the arithmetic mean and variance were calculated. It is found that one of…

A:

Q: If two random variables X and Y are statistically independent, then X and Y are said to be…

A:

Q: Consider the following time series data: Year Value 1 234 2 287 255 3.

A: GIven, α  = exponential smoothing coefficient Forecast, Ft = Ft-1 + α(At-1 - Ft-1) where, At =…

Q: what are the most effective methods for exploring and preparing data?

A: The effective ways of exploring and preparing the data are to be listed.

Q: The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on…

A:

Q: The y-intercept and slope coefficient of the x-variable are 0.013 and .892, respectively. If the…

A:

Q: Salaries of 47 college graduates who took a statistics course in college have a​ mean, x​, of…

A: We have given that,  Sample size (n) = 47, sample mean (x̄) = 68300 and population standard…

Q: 12. Given the probability density function ka?, 1 2) iv. P(0 < X < 3)

A: Solution

Q: Use the sample data and confidence level given below to complete parts​ (a) through​ (d). A research…

A: The random variable X follows normal distribution. We have to construct 95% confidence interval.…

Q: 5. Let f(x) is probability distribution function of X with: f(x) = { 21, x = 0, 1, 2, 3, 4, х 3 0,…

A:

Q: Aisha and Amber both took the ACT on the same day. They both earned a 27, but in different sections.…

A: Given: Aisha had earn 27 on her Science and Amber had earn 27 on her Math. For Science: μ = 20.9σ =…

Q: The times listed are the top twelve prelim times for the 100 Backstroke at a regional meet. 53.61,…

A:

Q: 10. The continuous random variable X has the probability distribution function: 0 < x < 2, 2c(2x –…

A:

Q: A veterinarian is interested in researching the proportion of men and women cat owners and believes…

A: There are two independent samples which are men and women. We have to test whether the proportion of…

Q: Write the null hypothesis and alternative hypothesis in each of the following situations. (statement…

A: Given situation:  A sociologist wants to find out if more Liberal voters than conservative voters…

Q: Suppose you are using a = 0.05 to test the alternative hypothesis that u # 36 using a P-value. You…

A:

Q: nin nax D1 28 58 nin nax D2 34 79 nin пах D3 56 90 20 30 40 50 60 70 80 90 100 Which of the…

A:

Q: 3. Show that the weighted arithmetic mean of first n natural numbers whose weights are equal to the…

A:

Q: Determine the minimum sample size required when you want to be 95% confident that the sample mean is…

A: It is given that Margin of error E = 1 Population SD = 18.8 Level of confidence = 0.95 The critical…

Q: The mean can also be thought of as the

A: Given that Statement : The mean can also be thought of as the    We know that  Mean is the average…

Q: 1. Abcde (pronounced "ab-city") was interested in whether the louder a flight attendant spoke (in…

A: 1. Correlation significance Test.

Q: 6. What are graph and diagrams? What are the importance and limitation of diagrammatic ar graphical…

A: Graphs are used to represent statistical data. It visulaizes how two or more variables that are…

Q: Flip a coin three times... Construct the sample space Use it to find the probability of at most…

A: Flip a coin three times... Construct the sample space Use it to find the probability of at most…

Q: Portfolio Benchmark 22.00% 16.00% -7.50% -2.30% 8.63% 17.88% 21.25% -9.63% -3.88% 3.25% 9.15% 11.21%…

A: Regression Analysis: Regression analysis is a statistical tactic for demonstrating the connection…

Q: An elevator has a placard stating that the maximum capacity is 1272 lb—8 passengers.​ So, 8 adult…

A: Assume that weights of males are normally distributed.

Q: In a two-way ANOVA, the main effect of a factor is the...

A: We have given the following statement about two - way ANOVA

Q: Assume that the sample is a simple random sample. 19.5      21      7.5      19      14      20…

A: given data : 19.5,21,7.5,19,14,20,10,12,21.5,16.5

Q: %3D A significance test was performed to test the null hypothesis u = 2 against the alternative u #…

A:

Q: 1. For the given the following x and y data: y 4 5.4 5 5.7 6 6.1 6.4 7 8 6.7 6.8 9 7.1 10 7.5 11 7.8…

A: Given data: x y 4 5.4 5 5.7 6 6.1 6 6.4 7 6.7 8 6.8 9 7.1 10 7.5 11 7.8 12…

Q: Type of Heating By Delinquent in Payment? Count Yes No Totals Electricity 20 130 150 Heating Oil 15…

A: Given:

Q: An energy company wants to choose between two regions in a state to install energy-producing wind…

A:

Q: We are interested in the proportion p of people who are unemployed in a large city. Eight percent of…

A:

Q: a. A random sample of 15 adults participated in a four-month weight loss program. Their mean weight…

A:

Q: What is the critical value for a two-tailed test with a = 0.10 and n = 100? A +1.645 B +1.96 C +2.33…

A: It is given that level of significance, α=0.10 and n =100

Q: typewritten.

A:

Q: d. -0.15.87 = 40 and o = 4, what is the probabilit 2. For a normal distribution with a mean of u of…

A: Note- Since you have posted multiple questions, as per our guidelines we are supposed to answer only…

Q: An analyst calculated the correlation coefficient between the unemployment rate in the United States…

A: Strength of Correlation coefficient is  If r&lt;0.5 weak correlation  If r&gt;0.5 strong correlation…

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

A:

Q: 1. What is the standard deviation for a binomial distribution with p= = п 3 36? and %3D а. 3 b. 9 с.…

A:

Q: Find the probability that Rebecca's fish are: (i) both the same sex (ii) both female (iii) both…

A: i) If the both fish are to be same sex then both can be male or female: (715*614)+(815*714)…

Q: If there are two variables u an v in which the value ui ponds to the value vi for each i, and a new…

A:

Q: able to easily calculate the actual percent of dropped calls directly from the entire database of…

A: Given data   sample size, n =2500 population proportion,p= 0.01 Significance level, α=…

Q: 1. What is an inflection point and how do you identify it? 2. How do you test a function to be…

A: Note: In Case of multiple questions, as per the guidelines answer to first question will be…

Q: A. For items 1-8, Complete the column under Lower Boundaries. CLASS INTERVAL Less than cumulative…

A: Given the frequency distribution table to calculate the value of D5