The scatter plot shows the average monthly outside temperature and the monthly electricity cost
Based on the scatter plot, what is the best prediction for the electricity cost if the
temperature for the month is 21°C?

$450
$500
$600
$700

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?

The value of x must be greater than what?

Astudy claims that the mean age of online dating service users is 40 years. some researchers think this is not accurate and want to show that the mean age is not 40 years. identify the null hypothesis, h0, and the alternative hypothesis, ha, in terms of the parameter μ. select the correct answer below: h0: μ≥40; ha: μ< 40 h0: μ≤40; ha: μ> 40 h0: μ≠40; ha: μ=40 h0: μ=40; ha: μ≠40