The bacterial strain Acinetobacter has been tested for its adhesion properties A sample of five measurements gave readings of 2 69, 5 76, 2 67, 1 62 and 4 12 dyne cm 2 Assume that the standard deviation is known to be 0 66 dyne cm2 and that the scientists are interested in high adhesion (at least 2...

a The alternative hypothesis should be onesided because the scientists ...

The bacterial strain Acinetobacter has been tested for its adhesion properties. A sample of five measurements gave

Question:

The bacterial strain Acinetobacter has been tested for its adhesion properties. A sample of five measurements gave readings of 2.69, 5.76, 2.67, 1.62 and 4.12 dyne-cm². Assume that the standard deviation is known to be 0.66 dyne-cm2 and that the scientists are interested in high adhesion (at least 2.5 dyne-cm2).

(a) Should the alternative hypothesis be one-sided or two-sided?

(b) Test the hypothesis that the mean adhesion is 2.5 dyne-cm2.

Fantastic news! We've Found the answer you've been seeking!