A research report from an independent-measures study states that there are significant differences between treatments, F(2,36)=3.45, p< .05 What was the total number of participants in the study?

Q: How many students should be sampled in order to be 90% confident in estimating the proportion in…

A: Given that  Margin of error =E =0.10 90% confidence.

Q: The manager of the Danvers-Hilton Resort Hotel stated that the mean guest bill for a weekend is $600…

A: We have the following information: The manager states that mean guest bill for a week-end is $600 or…

Q: Past studies have indicated that the percentage of smokers is estimated to be about 33%. Given the…

A:

Q: Suppose a researcher wants to estimate the population proportion of defective light bulbs. He took a…

A:

Q: It has been said that the overall number of male and female customers in a retail outlet…

A: From the provided information, Sample size (n) = 95 From which 45 are female and 50 are males.…

Q: If a study determines the difference in average salary for sub population of people with blue eyes…

A: Given that the difference in average salary for sub-populations of people with blue eyes and people…

Q: The manager of Carrefour selected samples of 64 customers and computed the sample average amounts…

A: Given: Sample size, n = 64          If the average amount spent is normally distributed then we are…

Q: At the ? = 0.05 level of significance, test for any difference in the job satisfaction among the…

A: Let μL,μPT,μC,μSA denotes the means of the four different jobs satisfaction among the professions.…

Q: an you conclude that the percentage of people aged 18-29 who have a tattoo is less than 25%

A: Given : n=830 , X=166 , p0=0.25 , α=0.01 The estimate of the sample proportion is ,…

Q: A researcher found that a 95% confidence interval for the mean hours per week spent studying by…

A: The 95% confidence interval is given by (13,17)

Q: An analysis was conducted to determine whether the average height of the 25 girls in the same class…

A: To test whether the average height of 25 girls is different from the general population of 15-year…

Q: A research study concluded that self-employed individuals do not experience higher job satisfaction…

A: Given data, Lawyer Physical Therapist Cabinetmaker Systems Analyst 46 57 52 44…

Q: The recidivism rate for convicted sex offenders is 14%. A warden suspects that this percent is…

A:

Q: The recidivism rate for convicted sex offenders is 15%. A warden suspects that this percent is…

A:

Q: A survey of 1024 people found 580 of them eat chicken soup when they have a cold or flu and…

A: The given question can be solved as shown in step2.

Q: During the summer of 2020, about 68% of San Diego young adults played a game called Animal Crossing.…

A:

Q: Is veganism more common than it used to be? In 2012, it was reported that 2% of Americans were…

A: The random variable adults living in the United States in 2019 who are vegan follows normal…

Q: A research study concluded that self-employed individuals do not experience higher job satisfaction…

A: State the hypotheses. Correct option: Option 5

Q: In 2008, there were 507 children in Arizona out of 32,601 who were diagnosed with Autism Spectrum…

A:

Q: A police officer waits on a road to catch speeding cars. In a one hour sample, the officer find that…

A:

Q: Many older homes have electrical systems that use fuses rather than circuit breakers. A manufacturer…

A: A hypothesis testing is an inference process which is used to make conclusions about the population…

Q: An article reports that in a sample of 124 nurses, 51 said that a busy workload had a positive…

A:

Q: Addmissions officer sampled 124 entering freshmen and found that 35 of them scored less than 530 on…

A: According to the provided information, x=35 n=124

Q: A very wise teacher measured brain activity in all 20 seniors in his Statistics class in the first…

A: We have to find p value for given testing.

Q: What are companies’ biggest obstacles to attracting the best talent? Of 703 surveyed U.S. and…

A:

Q: The z-score has no units even though the original values will normally be expressed in units such as…

A: Definitions: Z-score: A Z-score is a numerical measurement that describes a value's relationship to…

Q: A random sample of 400 Spanish adults revealed that 143 were smokers. A random sampleof 300 American…

A: The provided information are:

Q: The recidivism rate for convicted sex offenders is 8%. A warden suspects that this percent is…

A: Given Information: Hypothesized value of population proportion p0=0.08 Sample size n=321 Out of…

Q: Most adults would erase their personal data from the internet if they could. A software firm survey…

A:

Q: A historian examining British colonial records for the Gold Coast in Africa suspects that the death…

A: The proportion of African that died is p1=x1n1=24534002=0.007205459 The proportion of Europeans that…

Q: A Midwest college admissions committee recently conducted a study to determine the relative debt…

A: Let, s1 and σ1 be sample and population sd's of four year graduates respectively s2 and σ2 be sample…

Q: According to the most recent General Social Survey, 70% of adults watch TV nightly. A researcher…

A: Given that  According to the most recent General Social Survey, 70% of adults watch TV nightly.…

Q: A recent study indicated that 18% of people free from cardiovascular disease were considered obese.…

A:

Q: The marketing research company comScore, Inc. reported that 65% of online searches in March 2010…

A: The proportion of sample and the population significance difference is tested using the z test.…

Q: Sixteen out of 35 high school seniors ran the mile in less than 6.25 minutes. At a=0.01, is there…

A: Solution: Give Total =60 X+ =35 remaing. X-=25 The test statistic is X = \min\{X^+, X^-\} =…

Q: Suppose that an anxiety measure has a mean of 106 and SD of 20. The researcher only wants to work…

A:

Q: The recidivism rate for convicted sex offenders is 9%.  A warden suspects that this percent is…

A:

Q: In a small grocery, 23% of the bottled products were sold while 63% of the canned goods were not. If…

A: Solution To find the confidence interval we will use z distribution.

Q: The recidivism rate for convicted sex offenders is 11%. A warden suspects that this percent is…

A:

Q: What is the F test formula for comparing three or more means?

A: Formula :

Q: According to Security Magazine, 83% of ransomware victims paid to restore access to their data.…

A: Given,

Q: A microwave oven repairer believes that the mean repair cost for damaged computers is more than $95.…

A:

Q: If the test result is significant at 5% level, it must also be significant at 1% level.

A:

Q: A study reported in the Journal of Small Business Management concluded that self- employed…

A: Null Hypothesis:   H0: There is no difference in the job satisfaction among the four professions.…

Q: Some sleep experts believe that sleep apnea is more in men than in the general population. In other…

A: Note: According to Bartleby guidelines expert solve only one question and maximum 3 subpart of the…

Q: A historian examining British colonial records for the Gold Coast in Africa suspects that the death…

A: The number of samples extracted from the population is the sample size. When the sample size 30 or…

Q: An experiment was designed to compare the lengths of time that four different drugs provided pain…

A: Test hypotheses: There are 4 types of old drugs. Denote the true average time of each of the 4 drugs…

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A: Given: n = 89, x = 52, α = 0.05, p = 0.59. Sample proportion: p^=xn=5289=0.5843

Q: if a study determines the difference in average salary for subpopulations of people with blue eyes…

A: Given , a study determines the difference in average salary for sub populations of people with blue…

Q: A clinical psychologist took a sample of four people from the population of people with anxiety…

A: