A survey of 525 people was conducted to determine whether they have brothers and sisters.
• The results showed that 24% of the people surveyed do not have a sister and 68% of the people surveyed have a
brother
The results also show that 93 of the people surveyed do not have sister and do not have a brother.
Complete the two-way frequency table to show the results of the survey.
Have a Brother
Do Not Have a Brother
Total
Have
Sister
Do
Not
Have
а
Sister
Total
525

                                  Have a brother   Do not have a brother  Total

Have a sister                        324                             75                  399

Do not have a sister              33                              93                 126

Total                                       357                            168                 525

Explanation:

1. Build the structure of the two-way table:

                                    Have a brother    Do not have a brother   Total

Have a sister

Do not have a sister

Total

2. Fill in the given information

                                   Have a brother   Do not have a brother  Total

Have a sister

Do not have a sister

Total                                                                                                  525

        24% × 525 = 126

       That is the total of the row Do not have a sister

                                   Have a brother   Do not have a brother  Total

Have a sister

Do not have a sister                                                                        126

Total                                                                                                  525

        68% × 525 = 357

        That is the total of the column have a brother

                                   Have a brother   Do not have a brother  Total

Have a sister

Do not have a sister                                                                         126

Total                                      357                                                     525

        That is the intersection of the row do not have a sister and the colum do not have a brother

                                   Have a brother   Do not have a brother  Total

Have a sister

Do not have a sister                                               93                     126

Total                                      357                                                      525

The other missing cells can be found by difference:

                                   Have a brother   Do not have a brother  Total

Have a sister                                              

Do not have a sister              33                              93                   126

Total                                      357                             168                525

                                   Have a brother   Do not have a brother  Total

Have a sister                        324                             75                  399

Do not have a sister              33                             93                   126

Total                                      357                             168                525

Done!

127459073968947726

step-by-step explanation:

your welcome : )