The data in Table 9E.3 are temperature readings from a chemical process in °C, taken every two… 1 answer below »

The data in Table 9E.3 are temperature readings from a chemical process in °C, taken every two minutes. (Read the observations down, from left.) The target value for the mean is μ0 = 950.

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(a) Estimate the process standard deviation.

(b) Set up and apply a tabular cusum for this process, using standardized values = 5 and  width=

Interpret this chart.

TABLE 9 E.3

Chemical Process Temperature Data

953

985

949

937

959

948

958

952

945

973

941

946

939

937

955

931

972

955

966

954

948

955

947

928

945

950

966

935

958

927

941

937

975

948

934

941

963

940

938

950

970

957

937

933

973

962

945

970

959

940

946

960

949

963

963

933

973

933

952

968

942

943

967

960

940

965

935

959

965

950

969

934

936

973

941

956

962

938

981

927

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