Use a T-test of the data given in the picture, compare it with a P value(one tailed) and do a statistical analysis?

Q: A retail store is considering adding a new product line to its inventory. The store wants to know…

A: Sample size, N = 125favourable cases, x=70Confidence level, cl = 0.90level of significance,  = 0.10

Q: Explain the term Continuous Quantitative Data?

A: Continuous data is Quantitative data. Continuous Quantitative data is which can be measured or…

Q: how are parameters and statistics related?

A: Parameter: The parameter is used to explain the entire population. For example, a teacher calculated…

Q: Where do p-values concentrate?

A: Under the null hypothesis H0 about the unknown distribution of the test statistic, the p value is…

Q: Define how to use t-Statistic in Regression When the Sample Size Is Small? Explain Use of the…

A: The t statistics is divided by its standard error coefficient. The default error is an approximation…

Q: Explain why the minimum and maximum observations are added to the three quartiles to describe better…

A: Quartile: Quartiles are the values which divides the data into four equal parts. First quartile:…

Q: If the t-statistic for a variable is -1.74, is the variable statistically significant?   No   Yes

A: If the t-statistic for a variable is -1.74, is the variable statistically significant? Explanation:…

Q: Change z-score (-2.00) into X value – Mean = 50, standard deviation = 10

A: Standard normal distribution: The standard normal distribution is a special case of the normal…

Q: isn't it should use the normal table to find z value?

A:

Q: What happens to the percentile ranks as one moves from left to right on the X-axis

A: To check how the percentile ranks changes as one moves from left to right on the x-axis.

Q: Please also explain why you determined whether or not the results are statistically significant.  A…

A: From the given information we find the solution.

Q: what is the equation and r-squared value of the calibration curve ?

A: The required answer is given in the below step.

Q: What does it mean when a score is in the tail of a distribution?

A: The distribution in statistics or probability is the shape in which the data behaves when plotted.…

Q: You can assess normality of data using

A:

Q: please show the work for the problems with an explanation versus just shwoing calculated data.

A: To check the relationship b/w age and miles on the car.

Q: Does data have to always be numerical in statistics?

A: Does data have to always be numerical in statistics

Q: (b) Implement the test in part (a) and provide a two-tailed p-value. (Use an approximate method if…

A: Given that a pilot study is conducted where echocardiograms are obtained from 10 random children at…

Q: general, how is the magnitude of the standard error of estimate related to the value of the…

A: Correlation coefficient measure the degree of linear relationship between two variables

Q: Explain what restriction of range is and what it tends to do to the magnitude of a correlation.

A: To explain: Restriction of range What restriction of range tends to do to the magnitude of a…