A lifeguard believed that the more swimmers there were at the beach, the more seagulls showed up as well. He recorded the number of swimmers and number of seagulls that appeared each day for two weeks. He found that the variables were linearly related and the regression line equation was: y' = 1.8x + 30.4.

1.Which variable is he assuming to be the independent variable?

Group of answer choices

Number of seagulls

Number of swimmers

Neither of these.

2.How many seagulls would you expect to show up on a day when there are 100 swimmers? Round to the nearest whole number (no decimals).

If the answer cannot be determined type 123456.

3.How many swimmers would you expect to be on the beach if there are 100 seagulls? Round to the nearest whole number (no decimals).

If the answer cannot be determined type 123456.

4.The 1.8 means:

Group of answer choices:

For every one additional swimmer at the beach, you can expect 1.8 more seagulls at the beach.

The correlation coefficient is -1.8

On a day when there are no swimmers at the beach you can expect 1.8 seagulls.

The correlation coefficient is 1/1.8

The correlation coefficient is 1.8

For every one additional seagull at the beach, you can expect 1.8 more swimmers.

For every 1.8 more seagulls at the beach, you can expect 30.4 more swimmers.

For every 30.4 more seagulls at the beach, you can expect 1.8 more swimmers.

On a day when there are no seagulls at the beach you can expect 1.8 swimmers.

For every 30.4 more swimmers at the beach, you can expect 1.8 more seagulls.

For every 1.8 more swimmers at the beach, you can expect 30.4 more seagulls.

5. The 30.4 means:

Group of answer choices

For every 1.8 more seagulls at the beach, you can expect 30.4 more swimmers.

The correlation coefficient is -30.4

On a day when there are no seagulls at the beach you can expect 30.4 swimmers.

For every 30.4 more seagulls at the beach, you can expect 1.8 more swimmers.

For every one additional seagull at the beach, you can expect 30.4 more swimmers.

For every 30.4 more swimmers at the beach, you can expect 1.8 more seagulls.

For every 1.8 more swimmers at the beach, you can expect 30.4 more seagulls.

On a day when there are no swimmers at the beach you can expect 30.4 seagulls.

The correlation coefficient is 30.4

The correlation coefficient is 1/30.4

For every one additional swimmer at the beach, you can expect 30.4 more seagulls at the beach.