In a hypothesis test with the null and alternative hypotheses Ho: < 45 and H1:u > 45 , a random sample of 69 elements selected from the population produced a mean of 47.3. Assume that o = 6.9, and that the test is to be made at the 2.5% significance level. What is the value of the test statistic, z, rounded to three decimal places?

Q: Solve 3x2+x = 23

A: 3x2+x=23 On simplification, we get 3x2+x-23=0 Now comparing with ax2+bx+c=0, we get a=3,  b=1  &amp;…

Q: Solve 4x + 5-9x +15>0

A: To solve  4x + 5-9x +15&gt;0

Q: How many solutions does the equation 3x-9=7x-4

A: The equation is 3x - 9 = 7x - 4

Q: 3x-2 olve: 2x-3 2r

A: 3x-22x-3=3x+52x+3

Q: Solve 3x=14

A:

Q: Solve

A: On solving

Q: Solve

A: Given,           x3+3x4=2

Q: solve |12-6x|+3&gt;or=9

A:

Q: solve |2x+12|=4x

A: To solve the following equation.

Q: Solve  7x - 5 = 8x + 9

A: The equation is given by 7x-5 = 8x+9 To evaluate: The value of x which satisfy the equation.

Q: Solve 2x4+36x > 8x3+6x2

A: Given that the inequality is

Q: Solve - 2 -ळ - 2z -3

A: Here, we need to solve 2z+1-2z-34=2-3i. Let us convert RHS to polar form. So, 2-3i=5cos-arctan32+i…

Q: X+5=-4 solve for x

A: Solve for x

Q: Solve 6x - 5 66x

A: Given: 6x-566x

Q: Solve  5+8

A: Given sum, 5+8

Q: O = 272*+3 4.

A: It is given that, 13=27(2x+3)   According to logarithmic property, logab=b·logaandlog1a=-log(a)

Q: 6x+3=-8x+115 Solve for X

A: The given is to find the value of x.

Q: Solve (x+5)2=27

A: Explanation of the answer is as follows

Q: Solve by elimination  4x + 10y= -30 2x-9y =27

A: Given,         4x+10y=-30         2x-9y=27

Q: Solve /5a + 24 — г.

A:

Q: Solve 2 3 - = 13 and х у 5 4 -2 X X y

A: