The lines of symmetry in this particular picture are the horizontal and vertical lines.
If you were to look at the first quarter, and the vertical line reflects the curves to the second quarter.
Then, if you were to look at the horizontal line, you would see that the line reflects the entire top half to the bottom.
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Answer:
Type I error
Step-by-step explanation:
A type I error occurs if the null hypothesis is rejected when it is actually true.
Type I Type II
Reject null when true Fail to reject null when not true
Null hypothesis: ∪ = 30%
Alternative hypothesis: ∪ > 30%
The researchers concluded that more than 30% of first-grade students at this school have entered the concrete operational stage of development and they rejected the null hypothesis.
However, a census actually found that in the population of all first graders at this school, only 28% have entered the concrete operational stage.
A type I error has been made because in actuality the null hypothesis was true but was rejected.
He needs 420 to buy a new smartphone and accessories.
75-495= 420
420+75= 495
