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AVprozaik [17]
3 years ago
8

Researchers doing a study comparing time spent on social media and time spent on studying randomly sampled 200 students at a maj

or university. They found that students in the sample spent an average of 2.3 hours per day on social media and an average of 1.8 hours per day on studying. If all the students at the university in fact spent 2.2 hours per day on studying, with a standard deviation of 2 hours, and we find the probability of observing a sample mean of 1.8 hours studying has an extremely low probability, we say that observed time is: statistically wrong. statistically unlikely. statistically significant. statistically rare.
Mathematics
1 answer:
larisa [96]3 years ago
5 0
Dachshund know what is this man what do frog is making
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what is an equation of the line that is parallel to y equals negative 4x - 5 and passes through the point -2, 6
Bond [772]

y = - 4x - 2

the equation of a line in slope-intercept form is

y = mx + c ( m is the slope and c the y-intercept )

y = - 4x - 5 is in this form

with slope m = - 4

• Parallel lines have equal slopes

y = - 4x + c ← is the partial equation

To find c substitute (- 2, 6 ) into the partial equation

6 = 8 + c ⇒ c = 6 - 8 = - 2

y = - 4x - 2 ← equation of parallel line


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