Hi, I am from Penang ,need help to resolved the Basic Statistics Exam.

- From the data types below which one is an attribute data type ?

A lengths of time in the car

B Battery Life (in hours) of a cellular phone battery

C Diameter of pencils

D Salaries of employees

E The number of good and bad products

2. An individual is reviewing a stable, normal process that has a Cp=3 and Cpk=.5. In order to achieve a capable process, what must be done ?

A Not enough information given

B Shift the mean only

C Reduce variation only

D it is already a capable process

E Reduce variation and shift the mean

- When population data are discrete and you want to compare two populations, which test is most appropriate ?

A Levene’s

B t-test

C 2-Proportion Test

D Anderson-Darling

E F-test

- Which one of the following statistical test is used to compare five means, simultaneously ?

A One-Way ANOVA

B 2 Sample T-test

C Run Test

D F-Test

E Normality test

- Which test determines if there is a difference between the mean of a group and a proposed standard value ?

A Paired t-test

B Two sample t-test

C F- test

D One-sample t-test

E One way Anova

- While testing a statistical hypothesis with a significance level of alpha 0.05. when do you reject the NULL hypothesis (HO) ?

A When P=value is less than 0.05

B When P=value is between 0.1 and 0.5

C When P=value is equal to 0.5

D When P=value is larger than 0.5

E When P=value is larger than 0.95

- Which of the following is true about Standard Deviation

A It is the average

B It is a range of values

C It measures location

D It is measure of spread

E It is maximum value minus the minimum value

- What statistical assumptions need to be validated for ANOVA results to be valid ?

A Observations are selected, not randomized

B No assumptions are required to be met

C Observations are normally distribute, independent, a variance are equal

D Observations are from an F-distribution

E Observations are from a Chi square distribution

- Which of the following statements correctly interprets a 95% confidence interval on a population mean ?

A It is a single point estimate

B A 99% confidence interval is narrower than the 95% confidence interval

C It is not used to interpret the population

D If we repeatedly took sample from the same population, 95% of them would contain the true population mean.

E Used to quantify the certainty of the sample standard deviation

- The null hypothesis is ?

A Not Needed

B Always contains a > in the equation

C The hypothesis of no difference

D the alternative hypothesis

E Always contains a < in the equation.