Using the 2* rule, determine the number of class intervals(k) for the frequency distribution table(grouped data) given n=120. (A k=6 (B k=5 k=7 k=8

Q: A poll reported that 32% of 180 Canadians between the ages of 25 and 29 had started saving money for...

A: From the provided information,

Q: The probability of rejecting the null hypothesis when it is false is also called the power of the te...

A:

Q: The breaking strengths of cables produced by a certain manufacturer have historically had a mean of ...

A: From the provided information, Sample size (n) = 25 Sample mean (x̄) = 1932 Population standard devi...

Q: The following are grades recorded for a Social Studies test: 99, 81, 93, 88, 91, 88, 77, 81, 27, 79,...

A: We have given that data  First I want to find interquartile range.  IQR= Q3 - Q1  

Q: Question 1  Calculate Mean, Median, Mode for the following data sets? a) 20, 40, 35, 38, 43, 30 b) ...

A:

Q: Ho: H = Ho is a two-tailed hypothesis test True False

A: Null and alternative hypotheses: The hypothesis, which is pre assumed as true, tentatively settled u...

Q: Fifteen (15) samples of water were collected from a certain treatment facility in order to gain some...

A: Given: n = 15 x¯ = 3.84 ppm per liter s = 3.07 ppm per liter  

Q: Express the confidence interval 48.9%±8.8%48.9%±8.8% in interval form.

A:

Q: If n=320 and ˆpp^ (p-hat) =0.26, find the margin of error at a 95% confidence level

A:

Q: if 8 different colored beads are made into a necklace, how many necklaces can be produced having dif...

A:

Q: How

A: Here use combination 

Q: STATISTICAL ANALYSIS (No long explanation needed. Rate will be given and write the complete solution...

A: In order to find the confidence interval for σ2, R software is used.    

Q: witness to a hit-and-run accident told the police that the license number contained the letters RLH ...

A:

Q: p (sample proportion) is the proportion of observation, with population size N that belongs to a cla...

A: False is the answer.  Sample proportion is the proportion of observation,with sample size 'n' that b...

Q: Confidence intervals on the variance is very sensitive on the nomality of the data while the confide...

A: Confidence Interval for sd is calculated by taking square root of confidence interval for variance.

Q: Prediction and Tolerance Interval Fifteen (15) samples of water were collected from a certain treatm...

A: Step 1

Q: A third-party survey was conducted on 200 residents in a town south of Phoenix, Arizona about the pl...

A:

Q: The Fisher's Ideal Index Number of prices for five items for the year 2005 with 1997 as base for the...

A:

Q: CI on Mean, Variance Known Students on an internship program in the US Fish and Wildlife Service wis...

A:

Q: A Washington, D.C., “think tank” announces the typical teenager sent 67 text messages per day in 201...

A: Given n=12 Mean=67 Alpha=0.05

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

A: (b)   Use the range rule of thumb to determine the significantly low value. The significantly low va...

Q: B increases as µ deviates from Ho when Ho is false

A: here use basic of type 2 error

Q: Ho: µ = µo is a two-tailed hypothesis test True False

A:

Q: Identify the distribution with the following moment generating functions (i) M, (t)= |0.3 +0.7e' ]" ...

A: It is known that the moment generating function uniquely identifies the corresponding distribution.

Q: Which statement is correct. A one-sided hypothesis test produces a P-value of 0.0.036. O A. If we as...

A:  Introduction P-value: A p-value is a likelihood or percentage of getting outcomes at least as extre...

Q: You intend to estimate a population mean with a confidence interval. You believe the population to h...

A: Given data A sample size of 23 is given. we believe the population to have a normal distribution.

Q: Let X represent the full height of a certain species of tree. Assume that X has a normal probability...

A:  

Q: What is the lower class boundary of a class interval 45-49? (A) 45.5 B 44.5 49.5 (D) 45

A:

Q: Using Sturges rules determine the number of classes in which the following data should be divided. C...

A:

Q: IV. EXERCISES An electrical company claims that an average life of bulbs it manufactures is 1200 hou...

A: An electrical company claims that an average life of bulbs it manufactures is 1200 hours with a stan...

Q: Assume that a sample is used to estimate a population proportion p. Find the 99% confidence interval...

A: Given: 99% confidence  n= sample of size 193 x= 135

Q: The following data shows the number of hours slept by a patient in 1 weeks 12 18 09 16 11 10 08

A: Solution-: We calculate, (a) The unbiased estimate for the population mean=? (b) The unbiased estima...

Q: The United States Bureau of Labor Statistics (BLS) conducts the Quarterly Census of Employment and W...

A: We have given that.   X~N( μ , ?^2 )   μ=28.29  , ? =33.493 , n=54   Z-score =( x - μ )/?  

Q: 1. The number of condominium units sold per day, along with its corresponding probabilities, is show...

A:

Q: Given class interval 40-44 of a frequency distribution table, what is the class width?   5   24  ...

A: Given ,class interval is  40-44

Q: 1. Assume that the average yearly pay of all teachers in the Philippines follows a normal distributi...

A: Here all are normally distributed 

Q: Failing to reject Ho does not necessarily mean that there is a high probability that Ho is true. It ...

A:

Q: A certain population declines by 2% each year. What is the percentage decline each month? (Round you...

A: Solution-: A certain population  declines by 2% each year. We find the percentage decline each month...

Q: For the two missing blanks my answers were 148.55 and 159.05 but there were wrong what is the

A: Given

Q: 4. Find the regression equation for predicting final score from midterm score, based on the followin...

A: For solution number 4 Given: y¯f=70sf=10x¯m=55sm=20r=0.60

Q: The probability that a patient recovers from a stomach disease is 0.8. Suppose that 100 people contr...

A: Givenprobability that a patient recovers from stomach disease(p)=0.8sample size(n)=100x~Binomial(n=1...

Q: 3. For the 988 men age 18-24 in the HANES sample a 70 inches average weight 162 pounds SD 30 pounds ...

A: Given: For heightμ=70σ=3For weightμ=162σ=30

Q: In a business, the Chief Executive Officer wants to know if his workers are for or against mandatory...

A:

Q: Test of u = 34 vs not = 34 Variable N Mean StDev SE Mean T P 16 35.274 1.783 b. 0.012 c. How many de...

A: Note: As per our company guidelines we are supposed to answer only first three sub-parts. Kindly rep...

Q: A manufacturer finds the average demand per day for the machines to repair his new product is 1.5, o...

A:

Q: One-Sample T: Test of µ = 34 vs not= 34 Variable Mean StDev SE Mean T 16 35.274 1.783 a. b. 0.012 c....

A: The population mean is 34. We have to fill the given table. This is one sample t-test.

Q: Suppose we take a SRS of high school seniors and get a 95% confidence interval that 250 to 278 senio...

A:

Q: CI on Variance Defective alternator and corroded or loose battery charges are a few of the main caus...

A: Given : Sample size (n) = 5 Sample : 1.9 , 2.4 , 3.0 , 3.5 , 4.2 Confidence level = 95% Significance...

Q: A third-party survey was conducted on 200 residents in a town south of Phoenix, Arizona about the pl...

A: Given: Sample size, n=200 number of residents agree to plan , x=114

Q: A company produces men’s jeans that can be styled with either a regular cut or a boot cut. In an eff...

A: