0.0940 has 3 significant digits.

Q: The state education commission wants to estimate the fraction of tenth grade students that have…

A: Population is the set of all objects of interest. For statistical studies, the complete population…

Q: 5. Suppose a researcher sets a=.05 for a statistical test but then changes it to.01. How will this…

A: Here we want to know correct option.

Q: Suppose I interview a random sample of 300 adults and ask them to assess their health, from “Poor”…

A:

Q: Mean of 100 items is found to be 30. If at the time of calculation two items are wrongly taken as 32…

A:

Q: What is the result of 2.58×0.12, including correct significant figures?

A: Given, 0.58*0.12

Q: How do I interpret the mean of 12.5 and median of 12.5 with no repeating so there is no mode? How…

A: Given that  Mean = 12.5  Median = 12.5

Q: What is the predicted total number of wins in a regular season for a team that is averaging 75…

A: From the output, the intercept is -85.5476, and slope is 1.2849. The regression equation is, Total…

Q: Imagine that the pregnancy test accurately indicates pregnancy in 97.5% of the people who have it.…

A: The miss rate will be 2.5%

Q: 14) A researcher at a major clinic wishes to estimate the proportion of the adult population of the…

A:

Q: Science of collecting, analyzing and interpreting data using mathematical procedures is called?

A: Statistics is a branch of mathematics that is used in many fields to organize, analyze, and…

Q: A recent survey found that in a sample of 150 families, 46 owned dogs. A survey done 15 years ago…

A: Given that  A recent survey found that in a sample of 150 families, 46 owned dogs. A survey done 15…

Q: Explain in your own words using an example what is: 1. Manova 2. Anova

A:

Q: A certain tennis player makes a successful serve 80% of the time. Suppose the tennis player serves…

A: Given : A certain tennis player makes a successful serve 80% of the time. assume that tennis player…

Q: What is the mean number of heart failure patients with the condition due to natural causes that…

A: Heart failure is due to either natural occurrences (84%) or outside factors (16%). Outside factors…

Q: What is the incidence of CHD in smokers that can be attributed to smoking? Use the already rounded…

A: Cohort study used to establish the disease by following over a period of time among the exposure. It…

Q: What z-score value separates the highest 70% of the scores in a normal diatribution from the lowest…

A: Here we need to find a value z1 such that P(Z<z1)=0.7. Also Z ~ N(0,1).

Q: What is mean in math

A: When more than one datas are given, we define a term mean.

Q: 3. Is there a relationship between the number of children respondents have ever had and the number…

A: Pearson correlation coefficient measures the strength and direction of relationship between two…

Q: Social network news In 2012, Pew Research noted that34% of young adults age 18 to 24 got some news…

A: It is given that difference in proportion is not significant.

Q: At the 0.01 level of significance, determine whether die is true (or unifor

A: Test is that whether die is true. It is given that Level of significance = 0.01 Number of times die…

Q: Your medical research team is investigating the mean cost of a 30-day supply of a certain heart…

A:

Q: A survey conducted between January 1, 2001 and December 31, 2001 identified 3,240 cases of Type I…

A: Given:        Size of population = N = 4500,000        number of cases in 2001 =3240…

Q: 2. A survey found that 73% of respondents currently have a job. Is 73% a statistic or a parameter?…

A: Given that  Sample proportion p^=0.73 Parameter is based on population.

Q: CALCULATE THE LOWER 95% confidence inteveral when mean=27 , SE=1.23, n=14

A:

Q: What dp you mean by interpolation?

A: To define: interpolation.

Q: 7) A researcher at a major hospital wishes to estimate the proportion of the adult population of the…

A: Given that, Critical value: Using the z-table, the critical value at 99% confidence level is

Q: Question six-sided numbe

A:

Q: 2. Explain the steps of finding the IQR.

A: 2) The steps to finding the value of IQR is, Step 1: First arrange the data in ascending order Step…

Q: 8. What symbol is used to identify the standard error of the mean?

A: To find The symbol used to identify the standard error of the mean.

Q: Imagine that 200 people who do not have TB participated in the TB test. The test indicated 85.5% of…

A: False positive shows the there person does not have disease but they detected to have disease in the…

Q: Do men and women have the same average income level?

A: The image given shows two sample t-test for testing difference in income of men and women. Assume…

Q: This means the test statistic will equal approximately what value

A: It is given that Sample size n = 750 Number of users under the age of 18, X = 51

Q: We take a coin and flip it 10, 000, 000 times. We notice that 6, 010, 375 times it landed on heads.…

A: The coin is flipped 10,000,000 times and it lands on head 6,010,375 times.

Q: What is a mean square in the denominator?

A: Hi, there might be mistyping in the question . The question would be What is the denominator of the…

Q: An education official is interested in the percentage of the adult population over 20 years, in his…

A: Given, An education official is interested in the percentage of the adult population over 20 years,…

Q: A study is to be made to estimate the proportion of residents of a certain city and its suburbs who…

A: Given: Confidence level = 0.95, margin of error = E = 0.08.

Q: private opinion poll is conducted for a politician to determine what proportion of the population…

A:

Q: Q2 A new all-purpose cleaner is being test-markete locations in various supermarkets. The numbers…

A: By applying the ANOVA test for a single factor,

Q: There have been several studies conducted in an attempt to identify ways in which left-handed people…

A: Population standard deviation = 15 Level of significance = 0.01 Margin of error = 4 IQ points…

Q: 9. Frequency of clients that wait less than 20 minutes 10. Percentage of clients that wait less than…

A: A frequency distribution is a tabular, listed or graphical representation of data that shows the…

Q: A manufacturer wants to increase the shelf life of a line of cake mixes. Past records indicate that…

A: The hypotheses used for testing are given below:

Q: How many false positives were there? Explain the consequences of a false positive for the person…

A: The table given below    Test positive  Test negative  Total Have HIV 1339370 4030 1343400 Do…

Q: faculty cars have ages with a mean of 6 years and evel to test the claim that student cars are older…

A: Let X1 be the student car's age. x¯1: Sample means of student cars age= 7.2 s1 : Sample standard…

Q: A researcher wishes to see if there is a difference in the number of stories in the tall buildings…

A:

Q: I am not understanding what the (normal dist excel) info is and where these numbers come from? and I…

A: Here, P(Z< z ) =0.99 The aim is to find the Z score value so that 99% of area less than it.

Q: What is approximate value of 26 to the last near s’est tenth place?

A: Hii ! Thanks for posting the question . Since your question has more than three subparts , we have…

Q: 7. Apply Chebyshev's Theorem to find the least possible fraction of the numbers in a data set lying…

A: Chebyshev's inequality: Chebyshev's rule is appropriate for any distribution. That is, Chebyshev's…

Q: The test statistic is tsTAT =- !! (Type an integer or a decimal. Round to two decimal places as…

A:

Q: What is MSregression?

A: First of all, regression is one of the most important one in statistics which is commonly used in…

Q: When you collect data from many people to perform analysis, what is the source of such data?

A: The data collected directly from people using facts figures, objects, symbols using the survey…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.