BUS 310 EXAM 1 Review Sheet PDF

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Exam Name___________________________________

MULTIPLE CHOICE. Choose the one alternative that best complete Solve the problem 1) A ________ is a description of the approach that is used to o to any data collection activity. A) population frame B) pr C) sampling plan D) sa

2) Which of the following is true of judgment sampling? A) It selects samples based on random procedures. B) It selects samples based on expert opinion. C) It selects samples based on full representation of all su D) It selects samples based on ease of data collection. 3) Which of the following describes periodic sampling? A) It is a sampling method based on selecting a time and time. B) It is a sampling method based solely on expert opinion C) It is a sampling method based on selecting every nth i D) It is a sampling method exclusively used for populatio 4) ________ sampling applies to populations that are divided i appropriate proportion of samples to each subset. A) Systematic B) Cl C) Stratified D) Co

9) ________ are statistical errors that are due to the sample not adequately. A) Sampling errors B) N C) Parallax errors D) Q 10) Which of the following is the equation for calculating the sta n

 fi xi

A) (x 1 - x )n

B)

i=1 n

C) /

11) Which of the following is implied from the standard error o A) that larger sample sizes provide greater accuracy in es B) that the true mean of the population can only be calcu C) that standard deviation increases with increase in sam D) that true means of populations can be found easier tha 12) The Ransin Sports Company has noted that the size of indiv distributed with a mean of $112 and a standard deviation of answer for the probability that the next individual who buy more than $116? A) 48% B) 33% C) 42 13) Which of the following is a difference between interval estim A) Point estimates indicate the magnitude of potential err estimates don't. B) Point estimates cannot be used to calculate statistical e calculate statistical error. C) Point estimates on an average provide more informati i id l i l l f )P i

16) Which of the following is true of the t- distribution? A) It does not require parameters such as degrees of freed B) It converges to the standard normal distribution as de C) It is only used to calculate confidence intervals where deviation. D) It has narrower confidence intervals than the standard Use the table below to answer the following question(s). The historical data of Velvetta Inc., a healthcare products manufactu filling bottles of shampoo, variance in the volume is constant; howe volume. The historical standard deviation is 5 milliliters. In filling 2 volume of 242 milliliters. Velvetta Inc. Shampoo Production Alpha Value Standard Deviation Sample Size Sample Mean

0.05 5 20 242

17) Based on the data in the table above, calculate the margin of A) 1.96 B) 2.19 C) 1. 18) From the table above, calculate the z/2 value at a 95% conf A) 2.19

B) 1.84

C) 1.9

19) From the table above, determine the cumulative probability A) 1 B) 0.975 C) 0.9

23) In the equation for calculating a confidence interval for a pr p(1 - p) represent? n

A) the mean for the sampling distribution of the proporti B) the standard error for the sampling distribution of the C) the estimator for sampling distribution of the proporti D) the degree of freedom for the sampling distribution of 24) For the formula for calculating the confidence level with kn ________ represents the value of a standard normal random of 1 -  /2. A) x

B)  / n

C) x i

( 25) Which of the following is true of the equation [n  (z/2 )2 required to achieve a desired confidence interval half- width A) The sample size calculated will only be an approxima B) The value for  is always set at 1. C) The standard deviation need not be calculated first in D) The most conservative estimate for  is 0.5.

TRUE/FALSE. Write 'T' if the statement is true and 'F' if the stateme

26) Convenience sampling is an example of a probabilistic samp 27) Estimators are the measures used to estimate population pa...