Age	BMI	Language
74	38	English
32	27.3	Korean
60	34.9	French
47	28.5	Punjabi
19	15.3	French
52	34	Ukrainian
23	34.2	Punjabi
51	32.6	Hindi
38	33.5	English
33	29.3	English
44	32.2	Hindi
51	35.1	French
44	30.8	English
66	40.2	Chinese
63	30.6	English
58	35.9	English
38	32.4	Punjabi
49	28.8	English
29	21.6	English
31	19.4	English
39	25.5	English
40	30.6	Punjabi
33	35.1	English
26	23.4	English
64	39.8	English
55	29.7	English
25	23.2	English
34	30.4	English
48	32.5	Punjabi
55	41.7	English
32	29	Punjabi
63	39.2	English
63	31.7	English
50	27.3	English
45	27.8	English
52	29.1	French
60	41.8	English
41	25.6	English
37	30.8	Punjabi
57	35.4	English
42	23.3	English
34	27.9	Punjabi
53	30.8	Punjabi
40	32.1	English
63	36.4	Punjabi
52	31.4	Chinese
42	29.7	English
45	38.3	English
47	37.5	Chinese
57	26.4	English
54	28.7	English
53	33.8	English
51	35.9	English
30	17.9	French
49	35.1	English
49	38.3	English
33	28.9	English
52	25.4	Punjabi
38	21.1	English

Use the Excel attached above to answer the questions.

Threat the data in the file as a sample of all the students.

1. Test the (null) hypothesis, at 5% level of significance, that the population mean age of students is 45 years. Show the work.

2. Test the (null) hypothesis, at 5% level of significance, that the population proportion of students speaking English is 55%. Show the work.

3. Test the (null) hypothesis, at 5% level of significance, that the population proportion of students speaking English is no less than 65%. Show the work.