Bumble has three different smartphone calculator applications, A, B, and C, and wonders if they differ in usability. To test this, he gathered 900 participants and had each person try one of the three calculator apps, and then asked if the app is easy to use or not easy to use. Of the 300 participants that used Calculator A, 56% reported that the app is easy to use, which compares to 57% of the 300 that used Calculator B and 66% of the remaining 300 that used Calculator C.

To help Bumble conduct an appropriate test, first select the best set of hypotheses below.

What is the hypotheses?

What is the value of the test statistic (to 3 decimals)?

What is the value of its critical value at= 0.05 level of significance (to 3 decimals)?

What is the p-value? Select from the list below and report the letter.

1. below 0.01
2. between 0.01 and 0.025
3. between 0.025 and 0.05
4. between 0.05 and 0.10
5. above 0.10

What is your conclusion at= 0.05? Select from the list below and report the letter.

1. all calculators share the equal % of the ease of use ratings
2. all calculators have different % of the ease of use ratings
3. not all calculators share the equal % of the ease of use ratings
4. not all calculators have different % of the ease of use ratings