True/False Mark each of the following with a (+) for true and a (-) for false.
____1. The paired t-test has no underlying distribution assumptions.
____2. The chi-square statistic is always greater than or equal to zero.
____3. If the population is normal, we would still prefer a nonparametric test.
____4. The following 2X2 table would have a chi-square test statistic of zero:
____5. A criticism of the sign test is that magnitudes have no importance.
____6. The sign test is a binomially based test.
____7. Ties are discarded when doing the paired-t test.
____8. As is the case with the Normal probability distribution, the Chi-Square distribution is symmetrical.
____9. The chi-squared test of independence assumes the data is dependent to determine
the expected frequencies.
____10. The degrees of freedom for a 4 x 5 contingency table would be 20.
True/False Mark each of the following with a (+) for true and a (-) for false
1) The paired t-test has no underlying distribution assumptions. :
false ie (-)
2) The chi-square statistic is always greater than or equal to zero. :
true ie (+)
3) If the population is normal, we would still prefer a nonparametric test.
false ie (-)
4) The following 2X2 table would have a chi-square test statistic of zero
false (-)
5 ) A criticism of the sign test is that magnitudes have no importance.
false (-)
6) The sign test is a binomially based test.
true (+) :
The sign test is a special case of the binomial test where the probability of success under the null hypothesis is p = 0.5
7) Ties are discarded when doing the paired-t test.
false (-)
8) As is the case with the Normal probability distribution, the Chi-Square distribution is symmetrical.
false (-)
9)
The chi-squared test of independence assumes the data is dependent to determine
the expected frequencies.
True (+)
10 ) The degrees of freedom for a 4 x 5 contingency table would be 20.
false (-)
True/False Mark each of the following with a (+) for true and a (-) for false....
TRUE/FALSE ____1. Personal selling has the most flexibility when it comes to communicating with the customer. ____2. Soft light can help create a mood and a sense of atmosphere in a store. ____3. Generally, employee evaluation is done by that worker’s peers. ____4. Price bundling offers different products for sale at one price to increase the number of goods bought at one time. ____5. Usually, a personal interview is not needed when hiring new employees.
True/false ____1. Centralization of checkout areas reduce customer complaints about slow service. ____2. Word of mouth communication usually has the most credibility. ____3. Odd pricing means that a retailer charges an unusually high or low price for an item. ____4. Typically, coupons as a sales promotional idea do not develop long term loyalty in customers. ____5. A boutique layout has no certain pattern so it encourages customer browsing. ____6. Vendors have reduced lead times in getting goods to help reduce...
true or false ____1 The Statement of Cash Flows is an optional disclosure for a set of financial statements. ____2 The first step in preparing the Statement of Cash Flows is to determine the change in the long-term assets.. ____3 A statement of cash flows prepared by the indirect method will disclose the cash flows from specific operating activities, such as cash received from customers. ____4 Convertible bonds provide for the conversion of the interest rate being paid into a...
When Chi-square distribution is used as a test of independence, the number of degrees of freedom is related to both the number of rows and the number of columns in the contingency table. Select one: True False Question 2 Answer saved Points out of 1.000 Flag question Question text A goodness of fit test can be used to determine if membership in categories of one variable is different as a function of membership in the categories of a second variable...
a) true b) false 42. For a chi-square distributed random variable with 10 degrees of freedom and a level of sigpificanoe computed value of the test statistics is 16.857. This will lead us to reject the null hypothesis. a) true b) false 43. A chi-square goodness-of-fit test is always conducted as: a. a lower-tail test b. an upper-tail test d. either a lower tail or upper tail test e. a two-tail test 44. A left-tailed area in the chi-square distribution...
Determine if the following statement is true or false. If you believe that the statement is false, briefly explain why you think it is false The chi-squared test of independence only detects linear association between variables in a contingency table. Choose the correct answer below. O A. The statement is true. O B. The statement is false because the test determines if two proportions are equal not if there is a linear association between the variables OC. The statement is...
True or false? When the population variances are known, the test statistic that we use to compare two population means using two independent samples follows the standard normal distribution. True or false? A paired t-test with two columns of 8 observations in each column should use d.f =7
1) Answer the question True or False. 1) Nonparametric methods focus on the location of the probability distribution, rather than on specific parameters of the population. A) True B) False 2) Nonparametric tests are useful for qualitative data that can be ranked. A) True B) False 3) The sign test provides inferences about the population median rather than the population mean. A) True B) False 4) For a sign test to be valid, a large sample must be selected from...
Chapter 11, Section 11.3, Problem 021 Consider the following contingency table that is based on a sample survey. Column 1 Column 2 Column 3 Row 1 133 83 84 Row 2 90 52 | 91 | Row 3 1367996 a. Write the null and alternative hypotheses for a test of independence for this table. Ho: Rows and columns are H: Row and columns are b. Calculate the expected frequencies for all cells assuming that the null hypothesis is true. b....
While conducting a one-way ANOVA comparing 6 treatments with 10 observations per treatment, the computed value for SS(Treatment)= 1, and SS(Error)=24. Calculate the value of F. Round off the answer to 2 decimal digits A study was conducted to determine the association between the maximum distance at which a highway sign can be read ( in feet) and the age of the driver ( in years). Fourty drivers of various ages were studied. The summary statistics for distance and age are...