Historically, the mean systolic blood pressure (SBP) has been a rather high 139 units for adults in the population. We are interested in whether a recent health campaign on diet and exercise has potentially lowered the mean. Using data from a sample of 100 adults, the one-sided P-value is 0.0424. What do you conclude? We have evidence to reject the null hypothesis, and conclude the mean SBP is significantly different to 139 at the 5% level of significance There is no evidence to reject the null hypothesis that the mean SBP is 139 at the 5% level of significance We have evidence to reject the null hypothesis, and conclude the mean SBP is significantly below 139 at the 5% level of significance

Q: In your assignment, use the data "DPWH Major Projects". The data lists all major projects contracted…

A: 1) From the given information , the randomly selected 60 projects is displayed below.

Q: Continuous random variables 6. A charity group raises funds by collecting waste paper. A skip-full…

A:

Q: No. 1 2 3 4 5 90 78 90 X 75 85 84 88 S 6 10 3 12 Z -1.4 -4 1 6

A:

Q: A local county has an unemployment rate of 4.4%. A random sample of 20 employable people are picked…

A: Given,n=20p=0.044q=0.956A random variable X~Binomial(n=20  ,  p=0.044)P(X=x)=Cx0.044x0.95620-x   ;…

Q: This refers to the mean of the sample means according to Central Limit Theorem? (A) Sample mean (B)…

A: Central limit theorem CLT States that the sampling distribution of sample mean is Approximately…

Q: A supermarket owners believes that the mean income of its customers is 50,000 per month. One-…

A: For the given data Perform z test for one sample

Q: ). If a certain machine manufactures electrical resistors that have a mean resistance of 201.35 ohms…

A: Solution

Q: A survey of 2255 randomly selected US adults found that 51% said they know all or most o their…

A:

Q: (a) Show that the posterior distribution of λ is Gamma (n +1, +Σ*). (b) Obtain the Bayes estimate of…

A:

Q: A direct mail appeal for contributions from a university’s alumni and supporters is considered to be…

A: Compute the value of the test statistic =?

Q: Boran Stockbrokers, Inc., selects four stocks for the purpose of developing its own index of stock…

A:

Q: 3. Quartiles are the values that divide the data in three equal parts. 4. Deciles are the values…

A: There is usually a tendency of the variate values to cluster around a central value; in other words,…

Q: Analysis of Variance results: Where: Age > 5 Responses: Age Factors: Sex Response statistics by…

A: Given information: Anova table: Source DF SS MS F-Stat P-value Sex 1 134.98939 134.98939…

Q: In a job fair, 2000 applicants applied for a job. Their mean age was found to be 28 with a standard…

A: Given that  mean = 28 ,s.d =4 ,n =2000

Q: 5. Consider that in 1915 that the population in the United States was 100 million. Suppose the…

A: Given  Year Population size(in million) Growth rate (people per year in million) 1915 100 1…

Q: question #9 second part Suppose the age that children learn to walk is normally distributed with…

A: Solution

Q: The width of the confidence interval (mu1 - mu2) increases as s1 and s2 increase. True or False

A:

Q: Part 2 x²0.025,15

A:

Q: Continuous random variables 4. Let X be a continuous random variables with pdf. Find the mean and…

A: Obtain the value of E(X). The value of E(X) is obtained below as follows: From the information,…

Q: A company held a blood pressure screening clinic for its employees. The results are summarized in…

A: For the given data find the marginal and conditional distribution

Q: You estimated a regression with the following output. Source | SS df…

A: General form of regression line is , y^ = b0+b1x Where ,  b0 is y intercept b1 is slope of…

Q: Suppose a random sample of size n=8 is selected from a population that is normally distributed…

A:

Q: Question 6 20% O Ho: p = 0 HA: P = 0 b)Suppose that the result of the statistical test is to Reject…

A:

Q: Class 28-30 31-33 34-36 37-39 40-42 43-45 a. 30 b. 38 C. 28 d. 25 Frequency 8 8 7 5 1 1 ㅋ

A: (14)  We have given that,  Class : 28-30, 31-33, 34-36, 37-39, 40-42, 43-45 Frequency : 8, 8, 7, 5,…

Q: What is the shape of the distribution? What is the Measure of center? What is the Measure of spread?

A: Given distribution graph is,

Q: The table below shows the number of state-registered automatic weapons and the murder rate for…

A: The regression equation is y=0.82x+4.09.

Q: People were polled on how many books they read the previous year. Initial survey results indicate…

A: Given,standard deviation(s)=19.3margin of error(E)=3α=1-0.90=0.1α2=0.05Z0.05=1.645     (from…

Q: How much does a 1 unit increase in Weight increase price? Use negative values if it results in a…

A: The independent variable is Weight. The dependent variable is Price. We have to write the…

Q: The results of a question asked in a simple random survey are reported in the accompanying table.…

A: Confidence interval is an interval such that the probability of the unknown parameter to be included…

Q: Manufacturer A's television picture tubes have a mean lifespan of 7.13 years and a standard…

A:

Q: It takes an average of 14.5 minutes for blood to begin clotting after an injury. An EMT wants to see…

A:

Q: Class 28-30 31-33 34-36 37-39 40-42 43-45 a. 3 b. 2 C. 1 d. o Frequency 8 8 7 5 1 1 6

A: Question 13  We need to identify the class interval  As you see in class column the class interval…

Q: Class LB 28 30 27.5-30.5 31-33 30.5-33.5 34-36 33.5-36.5 36.5-39.5 37-39 40-42 39.5-42.5 43 45…

A: (18) we have given that,  Class LB frequency CF 28 - 30 27.5 - 30.5 8 8 31 - 33 30.5 - 33.5 8…

Q: 5. Make a decision. (Reject Ho and Accept Ha or Accept Ho and Reject Ha) 6. State the conclusion…

A:

Q: A cheese processing company wants to estimate the mean cholesterol content of all one-ounce servings…

A: Given Alpha=0.05 E=0.79 Standard deviations=3.14

Q: Twenty popular social media icons were randomly selected from all social media sites. These 20…

A: A complete set of elements on which study is being conducted is called population. A subset of all…

Q: The surface of a circular dart board has a small center circle called the bull's-eye and 20…

A:

Q: 18.1 You estimated the following regression. What value would you predict for Y, if X = 89? (Round…

A: From the given information, the intercept value is 36.39003.

Q: To the right is a stem-and-leaf display representing the amount of gasoline purchased, in gallons…

A: see the attachment please........

Q: 18. Solve for Decile 9. Class LB 28 30 - 27.5-30.5 31-33 30.5-33.5 34 36 33.5-36.5 37-39 36.5-39.5…

A: (18)  We have given that,  Class LB frequency cf 28 - 30 27.5 - 30.5 8 8 31 - 33 30.5 - 33.5…

Q: 28-30 27.5-30.5 31 33 30.5-33.5 36 33.5-36.5 34 37-39 36.5-39.5 40-42 42 39.5 42.5 43 45 42.5-45.5 -…

A: (16)  We have given that,  Class LB frequency CF 28 - 30 27.5 - 30.5 8 8 31 - 33 30.5 - 33.5…

Q: A report states the average temperature for the month of June on a specific tropical island is 98…

A: For the given data identify what type of test: right-tailed, left-tailed, or two-tailed.

Q: CNNBC recently reported that the mean annual cost of auto insurance is 1015 dollars. Assume the…

A: Given that mean =1015 ,s.d =264

Q: People were polled on how many books they read the previous year. Initial survey results indicate…

A: The random variable number of books read follows normal distribution. We have to find the sample…

Q: A researcher assessing the effects of a meditation app does not find a statistically significant…

A: Given that researcher assessing the effects of a meditation app does not find a statistically…

Q: Let's say you gave questionnaire to Grade 11 and Grade 12 asking about revision and you received the…

A: The percentage is computed by using the formula, percentage =fn×100%

Q: A baseball player has a batting average of 0.355. What is the probability that he has exactly 3 hits…

A:

Q: 17. Solve for Decile 8. Class LB 2830 27.5-30.5 31-33 30.5-33.5 34-36 33.5-36.5 37-39 36.5-39.5…

A: The Decile 8 is the value below which 80% data lies. And the Decile 9 is the value below which 90%…

Q: At the movies: A movie theater is considering a showing of Puppet Master for a 80's thowback night.…

A: The random variable interested patrons follows normal distribution. We have to construct 98%…

Q: Assuming the population has an approximate normal distribution, if a sample size n = 24 has a sample…

A: It is given that Sample size n = 24 Sample SD s = 2 The critical value of t at df = (n - 1) = 23 and…