Consider the following time series data. Week 1 2 3 4 5 6 Value 18 15 15 13 17 14 (a) Choose the correct time series plot. (i) (ii) (iii) (iv) – Select your answer – What type of pattern exists in the data? – Select your answer – (b) Develop a three-week moving average for this time series. Compute MSE and a forecast for week 7. Do not round intermediate calculations. If required, round your answers to two decimal places. Week Value Forecast 1 18 2 15 3 15 4 13

### The null hypothesis is Ho: p1=p2 and alternative is Ha: p1 not = to…

The null hypothesis is Ho: p1=p2 and alternative is Ha: p1 not = to p2 and level of significance is alpha =0.05 My question is if i am using a two tailed z test for this then why am I using the two tailed z hypothesis test?