State the null hypothesis and alternative hypothesis

Assignment Help Basic Statistics

Reference no: EM133025990

Question - Given that the maximum contaminant level for chromium is 0.1mg/L and I need to use a 0.01 level of significance, would I be correct in using the Z-score formula, stating that null hypothesis is μ<=0.1 and the alternative hypothesis is μ>50, and using the right tail test for a hypothesis testing? For context, I need to decide if the levels of chromium in the sample exceed the maximum contaminant level of 0.1mg/L.

Sample Date	Sample Number	Chromium Level (mg/L)
1-Aug	1	0.077
7-Aug	2	0.086
20-Aug	3	0.084
28-Aug	4	0.081
5-Sep	5	0.078
13-Sep	6	0.08
20-Sep	7	0.088
29-Sep	8	0.093
3-Oct	9	0.094
10-Oct	10	0.117
27-Oct	11	0.113
5-Nov	12	0.093
12-Nov	13	0.096
26-Nov	14	0.118
1-Dec	15	0.123
8-Dec	16	0.127
15-Dec	17	0.115
21-Dec	18	0.091
29-Dec	19	0.082
	20	0.088
	21	0.084
	22	0.094
	23	0.119
	24	0.121
	25	0.112
	26	0.106
	27	0.11
	28	0.112
	29	0.094
	30	0.082
	31	0.076
	32	0.071
	33	0.075
	34	0.071
	35	0.072
	36	0.081
	37	0.079
	38	0.082
	39	0.088
	40	0.092
	41	0.102
	42	0.101
	43	0.092
	44	0.081
	45	0.08

Reference no: EM133025990

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