We wish to determine whether there is a relationship between the gender of a teenager, and their preferred brand of cell

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We Wish To Determine Whether There Is A Relationship Between The Gender Of A Teenager And Their Preferred Brand Of Cell 1 (87.52 KiB) Viewed 93 times

We wish to determine whether there is a relationship between the gender of a teenager, and their preferred brand of cellphone. A survey of 200 teenagers produced the following results: PREFERRED BRAND Gender Apple Nokia Huawei TOTAL Female 30 35 33 98 Male 37 31 34 102 TOTAL 67 66 67 200 Perform an appropriate test at a 5% level of significance to determine whether there is a relationship between the gender of teenagers and the preferred brand of cellphone. The marketing manager of a shower gel manufacturing company wishes to know whether the three different shower gel fragrances that they produce are equally popular. A random sample of 600 consumers were asked to choose their favourite from the fragrances. The results were as follows: TYPE OF FRAGRANCE Tea Tree Lemon Citronella Total Number of consumers 182 209 209 600 Using a 10% significance level, test whether the fragrances are equally popular. The following table indicates the ages of a sample of female employees of People Plus Pty, and the corresponding monthly income of each employee (in thousands of rands). Age in Years (*) Monthly Income (ROOOs) (y) 47 45 56 51 39 38 34 33 45 43 53 44 By completing the table given below, and then applying the relevant formulae, determine the linear regression function for this bivariate data set. х у x? ху TOTAL If a female employee is 45 years of age, estimate her monthly income. Note: All Answers must be typed out and workings must be showed