Using 0.05 level of significance, test the hypothesis that proportions of coutnries with number of births greater than 30,000 are equal for both continents.

Q: hen creating a 99% CI based on data from one sample the size of n=31, which t value should be used?

A: Given: n=31 The degree of freedom=n-1=31-1=30 The level of significance (α)=0.01 We see inside the…

Q: A research report from an independent-measures study states that there are significant differences…

A: a)From the given information, the degrees of freedom treatment is 3.

Q: What is formula for converting a Raw Score to z?

A: The standard normal distribution: A continuous random variable Z is said to follow standard normal…

Q: An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans…

A: The question is about hypo. testing Given : Randomly selected no. of students ( n ) = 82 No. of…

Q: what statistical test would you use to answer:

A: We need to determine suitable statistical test.

Q: Using the difference data in Table 2, you obtain a ± ?? margin of error of the difference between…

A: Let women and men are the sample 1 and sample 2 respectively. Given: n1=150, n2=170, x1=117, x2=102…

Q: The margin of error in a research study is indicative of the precision and accuracy of the research…

A: Margin of error is a measure of the extent to which the sample may vary from population.  It is a…

Q: A Seattle consumer agency believes that plumbers’ rates are too high and wants to estimate the mean…

A: GivenConfidence Interval(c)=95%Margin of Error(E)=3%=0.03Let…

Q: Krista wants to compare males and females on number of hours of physical activity done per week. If…

A: The number of hours Physical activity done by males are collected. Similarity the number of hours of…

Q: What is the null hypothesis to test whether the population mean is different from 80?     μ = 80…

A: Solution: the null hypothesis to test whether the population mean is different from 80

Q: When is the age-standardised death rate more appropriate for comparing populations and when is crude…

A: Calculating crude death rate is more appropriate when we are considering the population of interest…

Q: In statistical inference, measurements are made on a sample or population?

A: To identify the correct answer to the question.

Q: A grocery store owner claims that the mean amount spent per checkout is more than $85. A test is…

A: Introduction: Denote m as the true mean amount spent per checkout. The null and alternative…

Q: If you have a sample size of 500, should you interpret the statistical significance or the effect…

A: Statistical Significance:Statistical significance, often represented by a p-value, indicates whether…

Q: What is the best point estimate for average number of credit hours per semester for all students at…

A: Given : At the local college a study found that students earn an average of 14.3 credit hours per…

Q: A rare birth defect occurs in approximately 0.5% of all cases in males. If we sample all the males…

A: Given information: The total number of males born in 2016 in a specific region is N = 200,000. It is…

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's…

A: Note:Thank you for posting the question! Since your question has more than 3 parts, we have solved…

Q: You would like to determine if there is a statistically significant difference between the bagel…

A: In this scenario, the aim is to obtain whether there is statistically significant difference between…

Q: At the particular courthouse, to increase his or her honor's statistical power, a judge can 1.…

A: Power of the test: Power of the test is defined as the probability of rejecting the null hypothesis…

Q: A research report from an independent-measures study states that there are significant differences…

A: Given information- We have given a report from an independent- measures study. F(3, 48) = 2.95, p…

Q: An instructor record how long it takes students to finish a statistics test. If the times are skewed…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The mean GPA for 138 residents of the local apartment complex is 1.9. What is the best point…

A: Solution: From the given information, the mean GPA for 138 residents of the local apartment complex…

Q: If the sample size is n=16 what is likely true about the shape of the population?

A: Solution:  Central limit theorem: The central limit theorem state that as the sample size increases…

Q: 52% of students entering four-year colleges receive a degree within six years. Is this percent…

A: Solution: Given information: n= 231 Sample size  x= 129 success  p^=xn= 129231=0.5584   Sample…

Q: A student at Phoenix High School conducted a survey. The student surveyed 100 of the 680 students…

A: Consider that in a sample of 100 student out of 680 students, the average number of APP's installed…

Q: Which scale of measurement most reasonably applies to race?

A: Which scale of measurement most reasonably applies to race?