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In a simple linear regression based on 30 observations, it is found that b1 = 3.25 and Sb1 = 1.36. Consider the hypotheses:
H0:β1 = 0 and HA: β1 ≠ 0.
a. Calculate the value of the appropriate test statistic.
b. Approximate the p -value.
c. At the 5% significance level, what is the conclusion? Is the explanatory variable significant?
determine the appropriate approach to conduct a hypothesis test for this claim fewer than 5 of patients experience
Find the sample proportion and the large-sample margin of error for 95% confidence. Explain in simple terms the meaning of the 95%.
in june an investor purchased 250 shares of oracle an information technology company stock at 20 per share. in august
Assume that pM is the true underlying proportion of men who favor the issue and that pW is the true underlying proportion of women who favor of the issue. If it actually is true that pW = pM = p, find the MLE of the common proportion p.
Fit a straight line to the relationship between Weight and Year.- Does a straight line seem reasonable?- Predict the average weight of the team for the year 2003. Does this seem reasonable?
East and West: for this discussion, please discuss the cultural differences between the two and how those differences were exacerbated by historical events. How much of the east-west rift remains as a part of global culture today?
an online computer retailer sells both desktop and laptop computers. assume that 8 of the computers that the online
1 public health officials claim that people living in low income neighborhoods have different physical activity levels
Based on past data, the Student Recreation Center knew that the proportion of students who prefer exercising outside over exercising in a gym was 0.734. To update their records, the SRC conducted a survey. Out of 95 students surveyed, 76 indicated..
suppose that n units are randomly sampled and x number of the sampled units are found to have the characteristic of
In Excel use the Descriptive Statistics and comment on the mean, the skewness, the standard deviation and kurtosis.
A study is conducted to determine if the traffic light patterns at a busy intersection need to be adjusted to help the flow of traffic. Data on the volume of traffic and the traffic patterns during different times of day are recorded.
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