Question

Timelimit: 3 hours. x] Show Intro/Instructions Are phone calls equally likely to occur any day of the week? The day of the week for each of 434 randomly selected phone calls was observed. The results are displayed in the table below. Use an a = 0.10 significance level. a. Complete the rest of the table by filling in the expected frequencies: Frequencies of Phone Calls for Each Day of the Week Outcome Frequency Expected Frequency Sunday 62 Monday 56 Tuesday 62 Wednesday 59 Thursday 62 Friday 75 Saturday 58 b. What is the correct statistical test to use? Select an answer c. What are the null and alternative hypotheses? HO: Phone calls and days of the week are independent. The distribution of phone calls is uniform over the days of the week. Phone calls and days of the week are dependent. The distribution of phone calls is not uniform over the days of the week. © 0) & - 4 5 6 7 8 9 0 .

Answer 1

f) P-value p[x's > 61389] 10.8.8.11 Robot 9) The p-value is greater than pa a h) fail to Based on this, we should reject Ho / Accept Ho There is sufficient evidence to conclude that dist of phone calls. is uniform over the day's of the weeka tudott >