Answer:
For the significance level of 0.01, the critical value for the test statistic is 2.326.
Step-by-step explanation:
Null hypothesis: population mean equals 5.
Alternate hypothesis: population mean is less than 5.
The test is a one-tailed test because the alternate hypothesis is expressed using less than.
For a one-tailed test, the critical value of the test statistic for the significance level of 0.01 is 2.326.
Answer:
∠ C = ∠BCD = 30°
Step-by-step explanation:
∠ EDF = ∠GFC = 110° [ corresponding angles ]
Now consider triangle BCF
∠FBC + ∠ABC = 180° [ straight line angle ]
∠FBC + 100° = 180°
∠FBC = 180 - 100 = 80°
∠BFC + ∠GFC = 180° [ straight line angle ]
∠BFC + 110° = 180°
∠BFC = 180 - 110 = 70°
Sum of angles of triangle is 180°
Therefore , in triangle BCF
That is ,
∠F + ∠B + ∠ C = 180°
70° + 80° + ∠C = 180°
∠C = 180 - 150 = 30°
Answer:
Vigil for an hour and two