strengths and criticisms of the scientific method in research

Q: 3. Use Slovin's Formula to compute for the value of n (number of samples) needed if the percentage…

A: here slovin's Formula  n = N1 + Ne2   N= population  =  2070  e= error = 4% =0.04

Q: The display provided from technology available below results from using data for a smartphone…

A: Given data isMean(x)=3.38standard deviation(s)=1.145979sample size(n)=50significance level(α)=0.05

Q: A polling company reported that 53% of 2302 surveyed adults said that they play football. Complete…

A: a. It is given that, according to the survey 53% of 2302 surveyed adults said that they play…

Q: For the following question, type the solutions to each part of the question in the space provided at…

A: 58% of students entering four-year colleges receive a degree within six years.  162 of the 249…

Q: A factory produces two types of electric bulbs A and B. In an experiment to their life, the…

A: The question is about coefficient of variation Given :

Q: Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to…

A: Given, PZ≤c=0.1357

Q: ** Let os be the median of a symmetric distribution that is of the contuous type. To test, with a =…

A:

Q: A frequency table of grades has five classes (A, B, C, D, F) with frequencies of 2, 14, 15, 8, and 3…

A: The table shows the grades and frequencies.

Q: A purple yam manufacturer claims that their containers contain 200 grams of yam. A random sample of…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Españ A biologist is studying rainbow trout that live in a certain river and she estimates their…

A:

Q: In a recent​ year, a hospital had 4142 births. Find the mean number of births per​ day, then use…

A: Solution-: Given : Mean number of birth per year (365 days) is 4142 We want to find, (a) The…

Q: 3. The Los Angeles Times regularly reports the air quality index for various areas of Southern Cal-…

A: Arrange the given data in ascending order28, 42,45,48, 49,50,55,58,60sample size(n)=9

Q: The amount of milk sold each day by a grocery store varies according to the Normal distribution with…

A: It is given that the mean is 130 and the standard deviation is 10.

Q: 1. A one-sample hypothesis test can involve two or more samples. 2. A two-tailed test with a = :…

A: It is given that the statements about to the testing of hypothesis. Here, need to find out the true…

Q: What is the standard deviation of 1,1,1,2,3,3,

A: It is given that the sample 1,1,1,2,3,3,3

Q: Prove. Let X₁, X₂,..., X be a r.s. from N(µ,σ²) and Y₁,Y,₂,...,Y, be another independent r.s. from…

A:

Q: A group of 500 students take a survey about distance learning.  150 prefer distance learning.  What…

A: The provided information is    A group of 500 students take a survey about distance learning.  150…

Q: Use the given partial histogram below to answer the following questions. The third probability and…

A: The objective is to find the probabilities using the given partial histogram.

Q: PROBLEM :  Two samples of rats are timed for their maze running time. One group is taking a drug and…

A: Hypothesis testing is used to test a claim about population parameter.

Q: A local government official observed an increase in the number of individuals with cardiovascular…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted.....…

Q: A marketing expert for a pasta-making company believes that 40% of pasta lovers prefer lasagna. If…

A:

Q: The probability that a smoke alarm will function properly and sound an alarm in the presence of…

A:

Q: Do political science classes require more writing than history classes? The 56 randomly selected…

A: Given n1=56 n2=54 X1-bar=18.1 X2-bar=15.5

Q: [S. CEREVISIAE] Instructions: Kindly compute for the t-test, table, and its interpretation. Raw data…

A: Given information: Plate No.  Positive Control – Nystatin Experimental - Basil leaf extract…

Q: A local government official observed an increase in the number of individuals with cardiovascular…

A: Given Information:- σ2=2.23 kg2σ=σ2=2.23=1.493318452≈1.4933 kg Data (x) 2 0.9 0.7 1.6…

Q: Full-time Ph.D. students receive an average of $12,837 per year. If the average salaries are…

A: Given that ; μ = $ 12837 ? = $ 1500 X = $ 17000 To find P( x < 17000) =  ? ?  P( x > 17000) =…

Q: A national internet service provider (ISP) claims that its broadband internet download speed is 200…

A: The question is about hypo. testing for a popl. mean Given : Popl. mean of broadband internet…

Q: The average amount of money that people spend at Don Mcalds fast food place is $7.4300 with a…

A: Given Mean=7.43 Standard deviations=1.51 n=45

Q: Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 12…

A: Here, x =21 The sample size n = 81. The absolute value of Zα/2 is 2.3263 using the Excel formula…

Q: According to a report published by the USDA 2 years ago, a typical American consumes an average of…

A: Given: Population mean = 31.1 Sample size = 64 Sample mean = 31.65 Sample standard deviation = 2.915…

Q: 14% of all Americans suffer from sleep apnea. A researcher suspects that a different percentage of…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: Categorical Categorical Categorical Categorical Categorical ProudOrg StayOrg UnManRe CoWrkRe…

A: Given Information: ProudOrg StayOrg UnManRe CowrkRe Schooling Training Aware Engagement Trust 2…

Q: In a certain county, the average annual income for a home provider involved with an online rental…

A:

Q: Prison Sentences The average prison sentence for a person convicted of second-degree murder is 15…

A: Introduction: We need to find the probability P (X > 18).

Q: A research center poll showed that 82% of people believe that it is morally wrong to not report all…

A: It is given that the probability that the people believe that it is morally wrong to not report all…

Q: a. +1 standard deviation from the mean. b. -1 standard deviation from the mean. c. +3 standard…

A: Here As per GUIDELINES I HAVE CALCULATED 3 SUBPARTS  Here use basic of normal distribution

Q: Suppose a survey of 275 executives is taken in an effort to determine what qualities are most…

A:

Q: Assuming that AP Music Theory scores are approximately normally distributed, what score was at the…

A: here given  mean  =  2.99  standard deviation =  1.32

Q: The proportion of defective television tubes made by some company has a beta distribution with mean…

A: Here, µ= 0.25 , σ=  0.0375. Here, X follows a normal distribution.

Q: A local government official observed an increase in the number of individuals with cardiovascular…

A: The solution is given below.

Q: Find the point estimate, standard error, and 99% confidence intervalforthe proportion ofworkers who…

A: We have given thatn = 74x = 11 α = 1 - 0.99 = 0.01

Q: central airlines claims that the median price of a round-trip ticket from chicago, illinois, to…

A: Sample size(n)=25 Median price=606 The number of tickets below $606 =11

Q: 4. An app developer would like to know how many songs people put in their phones. He interviewed 25…

A:

Q: Suppose we are interested in the proportion of statistics students at this university who are…

A: Number of students surveyed=10 Students responded to 'Commerce'=3 Students responded to 'Not…

Q: 1. Review the concept of data measurements. 2. Classify data according to their nature and…

A: We have to review the concepts of data measurement. And classify the given data according to their…

Q: zone. g. Suppose our desired sample size is n=300, and we wish to ensure that the distribution of…

A: Given three scenarios, we have to write which sampling technique is used in each scenario.

Q: 5. Descriptive statistics for the closing stock prices of two companies for several trading periods…

A: Given that: Microsoft, Inc Mean 4.04 Kurtosis -1.1 Standard error 0.11 Skewness 0.04 Median…

Q: Real-life Problem Apply the concept of Regression Analysis, present your ANSWER with COMPLETE…

A:

Q: Q3/A/Find the mean, standard deviation, lower and upper quartiles, and the coefficient of skewness…

A: Solution-: We have following table: fi= Number of students Marks Freq (fi) Below 5 6 Below 10…

Q: The cost of a daily newspaper varies from city to city. However, the variation among prices remains…

A: Given that: Take 1 dollar = 100 cents Population standard deviation, σ=0.20 Population mean μ=1…